79825580180

素因数分解:

$2^2\times 5^1\times {\mathrm{3991279009}}^1$

素因数の和:3991279018

約数の個数: 12

約数和(自身を含む): 167633718420

約数和(自身を除く): 87808138240

約数列:

[1, 2, 4, 5, 10, 20, 3991279009, 7982558018, 15965116036, 19956395045, 39912790090, 79825580180]

約数ペア:

[(1, 79825580180), (2, 39912790090), (4, 19956395045), (5, 15965116036), (10, 7982558018), (20, 3991279009)]