21930657

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{10139}}^1$

素因数の和:10252

約数の個数: 16

約数和(自身を含む): 33745920

約数和(自身を除く): 11815263

約数列:

[1, 3, 7, 21, 103, 309, 721, 2163, 10139, 30417, 70973, 212919, 1044317, 3132951, 7310219, 21930657]

約数ペア:

[(1, 21930657), (3, 7310219), (7, 3132951), (21, 1044317), (103, 212919), (309, 70973), (721, 30417), (2163, 10139)]