20218709870

素因数分解:

$2^1\times 5^1\times {\mathrm{47881}}^1\times {\mathrm{42227}}^1$

素因数の和:90115

約数の個数: 16

約数和(自身を含む): 36395299728

約数和(自身を除く): 16176589858

約数列:

[1, 2, 5, 10, 42227, 47881, 84454, 95762, 211135, 239405, 422270, 478810, 2021870987, 4043741974, 10109354935, 20218709870]

約数ペア:

[(1, 20218709870), (2, 10109354935), (5, 4043741974), (10, 2021870987), (42227, 478810), (47881, 422270), (84454, 239405), (95762, 211135)]