21800108

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{495457}}^1$

素因数の和:495472

約数の個数: 12

約数和(自身を含む): 41618472

約数和(自身を除く): 19818364

約数列:

[1, 2, 4, 11, 22, 44, 495457, 990914, 1981828, 5450027, 10900054, 21800108]

約数ペア:

[(1, 21800108), (2, 10900054), (4, 5450027), (11, 1981828), (22, 990914), (44, 495457)]