20975845

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{13151}}^1$

素因数の和:13196

約数の個数: 16

約数和(自身を含む): 28408320

約数和(自身を除く): 7432475

約数列:

[1, 5, 11, 29, 55, 145, 319, 1595, 13151, 65755, 144661, 381379, 723305, 1906895, 4195169, 20975845]

約数ペア:

[(1, 20975845), (5, 4195169), (11, 1906895), (29, 723305), (55, 381379), (145, 144661), (319, 65755), (1595, 13151)]