21248972

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{113}}^1\times {\mathrm{887}}^1$

素因数の和:1057

約数の個数: 24

約数和(自身を含む): 38265696

約数和(自身を除く): 17016724

約数列:

[1, 2, 4, 53, 106, 113, 212, 226, 452, 887, 1774, 3548, 5989, 11978, 23956, 47011, 94022, 100231, 188044, 200462, 400924, 5312243, 10624486, 21248972]

約数ペア:

[(1, 21248972), (2, 10624486), (4, 5312243), (53, 400924), (106, 200462), (113, 188044), (212, 100231), (226, 94022), (452, 47011), (887, 23956), (1774, 11978), (3548, 5989)]