21811372

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{495713}}^1$

素因数の和:495728

約数の個数: 12

約数和(自身を含む): 41639976

約数和(自身を除く): 19828604

約数列:

[1, 2, 4, 11, 22, 44, 495713, 991426, 1982852, 5452843, 10905686, 21811372]

約数ペア:

[(1, 21811372), (2, 10905686), (4, 5452843), (11, 1982852), (22, 991426), (44, 495713)]