20311475

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{701}}^1$

素因数の和:791

約数の個数: 24

約数和(自身を含む): 26984880

約数和(自身を除く): 6673405

約数列:

[1, 5, 19, 25, 61, 95, 305, 475, 701, 1159, 1525, 3505, 5795, 13319, 17525, 28975, 42761, 66595, 213805, 332975, 812459, 1069025, 4062295, 20311475]

約数ペア:

[(1, 20311475), (5, 4062295), (19, 1069025), (25, 812459), (61, 332975), (95, 213805), (305, 66595), (475, 42761), (701, 28975), (1159, 17525), (1525, 13319), (3505, 5795)]