201221540 is an even 9-digits composite number following 201221539
and preceding 201221541. In scientific notation, it is written as 2.01221540 × 10^8.
The sum of its digits is 17. It has a total of 7 prime factors and 72 positive divisors.
There are 72244224 positive integers (up to 201221540) that are relatively prime to 201221540.
Prime Factorization
2 × 2 × 37 × 5 × 13 × 13 × 1609
Composite number
| ω |
Distinct Factors |
5 |
Total number of distinct prime factors |
| Ω |
Total Factors |
7 |
Total number of prime factors |
| rad |
Radical |
7739290 |
Product of the distinct prime numbers |
The prime factorization of 201221540 is 2 × 2 × 37 × 5 × 13 × 13 × 1609.
Since it has a total of 7 prime factors.
1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 169, 185, 260, 338, 370, 481, 676, 740, 845, 962, 1609, 1690, 1924, 2405, 3218, 3380, 4810, 6253, 6436, 8045, 9620, 12506, 16090, 20917, 25012, 31265, 32180, 41834, 59533, 62530, 83668, 104585, 119066, 125060, 209170, 238132, 271921, 297665, 418340, 543842, 595330, 773929, 1087684, 1190660, 1359605, 1547858, 2719210, 3095716, 3869645, 5438420, 7739290, 10061077, 15478580, 20122154, 40244308, 50305385, 100610770, 201221540
72 divisors
| τ |
Total Divisors |
72 |
Total number of the positive divisors of n |
| σ |
Sum of Divisors |
1 |
Sum of all the positive divisors of n |
| s |
Aliquot Sum |
-201221539 |
Sum of the proper positive divisors of n |
| A |
Arithmetic Mean |
0.013888888888889 |
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 |
72 |
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 201221540 can be divided by 72 positive divisors.
The sum of these divisors (counting 201221540) is 1, the average is 0.013888888888889.