20400675

素因数分解:

$3^1\times 5^2\times {\mathrm{272009}}^1$

素因数の和:272022

約数の個数: 12

約数和(自身を含む): 33729240

約数和(自身を除く): 13328565

約数列:

[1, 3, 5, 15, 25, 75, 272009, 816027, 1360045, 4080135, 6800225, 20400675]

約数ペア:

[(1, 20400675), (3, 6800225), (5, 4080135), (15, 1360045), (25, 816027), (75, 272009)]