20353405

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{691}}^1$

素因数の和:876

約数の個数: 16

約数和(自身を含む): 25210944

約数和(自身を除く): 4857539

約数列:

[1, 5, 43, 137, 215, 685, 691, 3455, 5891, 29455, 29713, 94667, 148565, 473335, 4070681, 20353405]

約数ペア:

[(1, 20353405), (5, 4070681), (43, 473335), (137, 148565), (215, 94667), (685, 29713), (691, 29455), (3455, 5891)]