21399554

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{521}}^1\times {\mathrm{1867}}^1$

素因数の和:2401

約数の個数: 16

約数和(自身を含む): 35103456

約数和(自身を除く): 13703902

約数列:

[1, 2, 11, 22, 521, 1042, 1867, 3734, 5731, 11462, 20537, 41074, 972707, 1945414, 10699777, 21399554]

約数ペア:

[(1, 21399554), (2, 10699777), (11, 1945414), (22, 972707), (521, 41074), (1042, 20537), (1867, 11462), (3734, 5731)]