21091222

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{2087}}^1$

素因数の和:2283

約数の個数: 16

約数和(自身を含む): 32873472

約数和(自身を除く): 11782250

約数列:

[1, 2, 31, 62, 163, 326, 2087, 4174, 5053, 10106, 64697, 129394, 340181, 680362, 10545611, 21091222]

約数ペア:

[(1, 21091222), (2, 10545611), (31, 680362), (62, 340181), (163, 129394), (326, 64697), (2087, 10106), (4174, 5053)]