20637620

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{5701}}^1$

素因数の和:5891

約数の個数: 24

約数和(自身を含む): 43586088

約数和(自身を除く): 22948468

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 5701, 11402, 22804, 28505, 57010, 114020, 1031881, 2063762, 4127524, 5159405, 10318810, 20637620]

約数ペア:

[(1, 20637620), (2, 10318810), (4, 5159405), (5, 4127524), (10, 2063762), (20, 1031881), (181, 114020), (362, 57010), (724, 28505), (905, 22804), (1810, 11402), (3620, 5701)]