21718406

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{521}}^1\times {\mathrm{1097}}^1$

素因数の和:1639

約数の個数: 16

約数和(自身を含む): 34389360

約数和(自身を除く): 12670954

約数列:

[1, 2, 19, 38, 521, 1042, 1097, 2194, 9899, 19798, 20843, 41686, 571537, 1143074, 10859203, 21718406]

約数ペア:

[(1, 21718406), (2, 10859203), (19, 1143074), (38, 571537), (521, 41686), (1042, 20843), (1097, 19798), (2194, 9899)]