21200464

素因数分解:

$2^4\times {\mathrm{251}}^1\times {\mathrm{5279}}^1$

素因数の和:5538

約数の個数: 20

約数和(自身を含む): 41247360

約数和(自身を除く): 20046896

約数列:

[1, 2, 4, 8, 16, 251, 502, 1004, 2008, 4016, 5279, 10558, 21116, 42232, 84464, 1325029, 2650058, 5300116, 10600232, 21200464]

約数ペア:

[(1, 21200464), (2, 10600232), (4, 5300116), (8, 2650058), (16, 1325029), (251, 84464), (502, 42232), (1004, 21116), (2008, 10558), (4016, 5279)]