21957013

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{1361}}^1$

素因数の和:1464

約数の個数: 16

約数和(自身を含む): 25398576

約数和(自身を除く): 3441563

約数列:

[1, 13, 17, 73, 221, 949, 1241, 1361, 16133, 17693, 23137, 99353, 300781, 1291589, 1689001, 21957013]

約数ペア:

[(1, 21957013), (13, 1689001), (17, 1291589), (73, 300781), (221, 99353), (949, 23137), (1241, 17693), (1361, 16133)]