21004655

素因数分解:

$5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{8221}}^1$

素因数の和:8306

約数の個数: 16

約数和(自身を含む): 29204544

約数和(自身を除く): 8199889

約数列:

[1, 5, 7, 35, 73, 365, 511, 2555, 8221, 41105, 57547, 287735, 600133, 3000665, 4200931, 21004655]

約数ペア:

[(1, 21004655), (5, 4200931), (7, 3000665), (35, 600133), (73, 287735), (365, 57547), (511, 41105), (2555, 8221)]