Question: The number 80 is divided by a certain positive integer, and the quotient obtained is further divided by another positive integer. The final quotient is 10. What are the possible pairs of positive integers?

Let's assume the first positive integer is x and the second positive integer is y. According to the given information, we have the equation (80/x)/y = 10. Simplifying this equation, we get 80/(xy) = 10, implying xy = 800. So, the possible pairs of positive integers (x, y) can be any pair of factors of 800, including (1, 800), (2, 400), (4, 200), (5, 160), (8, 100), (10, 80), (16, 50), (20, 40), (25, 32), (32, 25), (40, 20), (50, 16), (80, 10), (100, 8), (160, 5), (200, 4), (400, 2), and (800, 1).

Math question: If Victoria has a collection of 80 baseball cards and she buys 5 more each month for a year, how many baseball cards will she have after 12 months?

To find the number of baseball cards Victoria will have after 12 months, we need to add the cards she currently has (80) to the number of cards she acquires each month (5), multiplied by the number of months (12). Thus, the equation becomes: 80 + (5 * 12) = 80 + 60 = 140. After 12 months, Victoria will have 140 baseball cards in her collection.

Math question: What is the sum of the first 40 positive even numbers greater than 1?

To find the sum, we'll use the formula for the sum of an arithmetic series: Sn = n/2(2a + (n-1)d), where 'n' is the number of terms, 'a' is the first term, and 'd' is the common difference. In this case, n = 40, a = 2, and d = 2. Plugging in these values: Sn = 40/2(2(2) + (40-1)(2)), which simplifies to Sn = 20(4 + 39)(2). Further simplifying, Sn = 20(43)(2) = 1720. Therefore, the sum of the first 40 positive even numbers greater than 1 is 1720.

Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

80 (number)

80 is an even 2-digits composite number following 79 and preceding 81. In scientific notation, it is written as 8.0 × 10^1. The sum of its digits is 8. It has a total of 5 prime factors and 10 positive divisors. There are 32 positive integers (up to 80) that are relatively prime to 80.

Interesting facts

80 has 10 divisors, whose sum is 186
The reverse of 80 is 08
Previous prime number is 2

Basic properties

Is Prime? no
Number parity even
Number length 2
Sum of Digits 8
Digital Root 8

Name

Name	eighty

Notation

Scientific notation	8.0 × 10^1
Engineering notation	8.0 × 10^0

Prime Factorization of 80

Prime Factorization 2 × 2 × 2 × 2 × 5

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	5	Total number of prime factors
rad	Radical	10	Product of the distinct prime numbers

The prime factorization of 80 is 2 × 2 × 2 × 2 × 5. Since it has a total of 5 prime factors.

Most popular turbo-numbers

10, 6, 84, 31, 61, 831, 2195, 9898, 60267, 78104, 345867, 857887, 4656514, 6428925, 53389359, 60302781, 428775203, 345634669, 6599182622, 3990944895

Basic calculations (n = 80)

Multiplication

n×y

n×2	160
n×3	240
n×4	320
n×5	400

Division

n÷y

n÷2	40
n÷3	26.666666666667
n÷3	20
n÷5	16

Exponentiation

n^y

n²	6400
n³	512000
n⁴	40960000
n⁵	3276800000

Nth Root

^y√n

²√n	8.9442719099992
³√n	4.3088693800638
⁴√n	2.9906975624424
⁵√n	2.4022488679629

Divisors of 80

1, 2, 4, 5, 8, 10, 16, 20, 40, 80

10 divisors

τ	Total Divisors	10	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-79	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.1	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	1	Returns the nth root of the product of n divisors
H	Harmonic Mean	10	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 80 can be divided by 10 positive divisors. The sum of these divisors (counting 80) is 1, the average is 0.1.

Base conversion 80

Base	System	Value
2	Binary	1010000
3	Ternary	2222
4	Quaternary	1100
5	Quinary	310
6	Senary	212
8	Octal	120
10	Decimal	80
12	Duodecimal	68
16	Hexadecimal	50
20	Vigesimal	40
36	Base36	28

Cryptographic Hash Functions

md5	f033ab37c30201f73f142449d037028d
sha1	b888b29826bb53dc531437e723738383d8339b56
sha256	48449a14a4ff7d79bb7a1b6f3d488eba397c36ef25634c111b49baf362511afc
sha512	80def0a37cb589be75e1b976ac3a7666e6f9ce9c3830901107fb170aaa0e3bd17ff96c5871972eca91f50658eb632aa431b804e2ba6b2dffce2ad0ae64712782
ripemd-160	ee2db46b2f2942c74446d91581f22997f7b8e456

80 as geometric shapes

Circle

Radius = n

Diameter	160
Circumference	502.65482457437
Area	20106.192982975

Sphere

Radius = n

Volume	2144660.5848506
Surface area	80424.771931899
Circumference	502.65482457437

Square

Length = n

Perimeter	320
Area	6400
Diagonal	113.13708498985

Cube

Length = n

Surface area	38400
Volume	512000
Space diagonal	138.56406460551

Equilateral Triangle

Length = n

Perimeter	240
Area	2771.2812921102
Altitude	69.282032302755

Triangular Pyramid

Length = n

Surface area	2771.2812921102
Volume	60339.778661252
Height	37.712361663283