21138898

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{641}}^1\times {\mathrm{1499}}^1$

素因数の和:2153

約数の個数: 16

約数和(自身を含む): 34668000

約数和(自身を除く): 13529102

約数列:

[1, 2, 11, 22, 641, 1282, 1499, 2998, 7051, 14102, 16489, 32978, 960859, 1921718, 10569449, 21138898]

約数ペア:

[(1, 21138898), (2, 10569449), (11, 1921718), (22, 960859), (641, 32978), (1282, 16489), (1499, 14102), (2998, 7051)]