21179977

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{13691}}^1$

素因数の和:13728

約数の個数: 16

約数和(自身を含む): 27603072

約数和(自身を除く): 6423095

約数列:

[1, 7, 13, 17, 91, 119, 221, 1547, 13691, 95837, 177983, 232747, 1245881, 1629229, 3025711, 21179977]

約数ペア:

[(1, 21179977), (7, 3025711), (13, 1629229), (17, 1245881), (91, 232747), (119, 177983), (221, 95837), (1547, 13691)]