20401495

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{569}}^1$

素因数の和:746

約数の個数: 16

約数和(自身を含む): 25116480

約数和(自身を除く): 4714985

約数列:

[1, 5, 71, 101, 355, 505, 569, 2845, 7171, 35855, 40399, 57469, 201995, 287345, 4080299, 20401495]

約数ペア:

[(1, 20401495), (5, 4080299), (71, 287345), (101, 201995), (355, 57469), (505, 40399), (569, 35855), (2845, 7171)]