21556216

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{244957}}^1$

素因数の和:244974

約数の個数: 16

約数和(自身を含む): 44092440

約数和(自身を除く): 22536224

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 244957, 489914, 979828, 1959656, 2694527, 5389054, 10778108, 21556216]

約数ペア:

[(1, 21556216), (2, 10778108), (4, 5389054), (8, 2694527), (11, 1959656), (22, 979828), (44, 489914), (88, 244957)]