20161280 is an even 8-digits composite number following 20161279
and preceding 20161281. In scientific notation, it is written as 2.0161280 × 10^7.
The sum of its digits is 20. It has a total of 11 prime factors and 72 positive divisors.
There are 7630848 positive integers (up to 20161280) that are relatively prime to 20161280.
Prime Factorization
2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 19 × 829
Composite number
| ω |
Distinct Factors |
4 |
Total number of distinct prime factors |
| Ω |
Total Factors |
11 |
Total number of prime factors |
| rad |
Radical |
157510 |
Product of the distinct prime numbers |
The prime factorization of 20161280 is 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 19 × 829.
Since it has a total of 11 prime factors.
1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 256, 304, 320, 380, 608, 640, 760, 829, 1216, 1280, 1520, 1658, 2432, 3040, 3316, 4145, 4864, 6080, 6632, 8290, 12160, 13264, 15751, 16580, 24320, 26528, 31502, 33160, 53056, 63004, 66320, 78755, 106112, 126008, 132640, 157510, 212224, 252016, 265280, 315020, 504032, 530560, 630040, 1008064, 1061120, 1260080, 2016128, 2520160, 4032256, 5040320, 10080640, 20161280
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 |
-20161279 |
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 20161280 can be divided by 72 positive divisors.
The sum of these divisors (counting 20161280) is 1, the average is 0.013888888888889.