20680525

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:333

約数の個数: 24

約数和(自身を含む): 26569728

約数和(自身を除く): 5889203

約数列:

[1, 5, 25, 61, 71, 191, 305, 355, 955, 1525, 1775, 4331, 4775, 11651, 13561, 21655, 58255, 67805, 108275, 291275, 339025, 827221, 4136105, 20680525]

約数ペア:

[(1, 20680525), (5, 4136105), (25, 827221), (61, 339025), (71, 291275), (191, 108275), (305, 67805), (355, 58255), (955, 21655), (1525, 13561), (1775, 11651), (4331, 4775)]