21581020

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{18289}}^1$

素因数の和:18357

約数の個数: 24

約数和(自身を含む): 46090800

約数和(自身を除く): 24509780

約数列:

[1, 2, 4, 5, 10, 20, 59, 118, 236, 295, 590, 1180, 18289, 36578, 73156, 91445, 182890, 365780, 1079051, 2158102, 4316204, 5395255, 10790510, 21581020]

約数ペア:

[(1, 21581020), (2, 10790510), (4, 5395255), (5, 4316204), (10, 2158102), (20, 1079051), (59, 365780), (118, 182890), (236, 91445), (295, 73156), (590, 36578), (1180, 18289)]