20012335

素因数分解:

$5^1\times 7^4\times {\mathrm{1667}}^1$

素因数の和:1700

約数の個数: 20

約数和(自身を含む): 28032408

約数和(自身を除く): 8020073

約数列:

[1, 5, 7, 35, 49, 245, 343, 1667, 1715, 2401, 8335, 11669, 12005, 58345, 81683, 408415, 571781, 2858905, 4002467, 20012335]

約数ペア:

[(1, 20012335), (5, 4002467), (7, 2858905), (35, 571781), (49, 408415), (245, 81683), (343, 58345), (1667, 12005), (1715, 11669), (2401, 8335)]