21196816

素因数分解:

$2^4\times {\mathrm{1151}}^2$

素因数の和:2310

約数の個数: 15

約数和(自身を含む): 41104543

約数和(自身を除く): 19907727

約数列:

[1, 2, 4, 8, 16, 1151, 2302, 4604, 9208, 18416, 1324801, 2649602, 5299204, 10598408, 21196816]

約数ペア:

[(1, 21196816), (2, 10598408), (4, 5299204), (8, 2649602), (16, 1324801), (1151, 18416), (2302, 9208)]