20650040

素因数分解:

$2^3\times 5^1\times {\mathrm{516251}}^1$

素因数の和:516262

約数の個数: 16

約数和(自身を含む): 46462680

約数和(自身を除く): 25812640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 516251, 1032502, 2065004, 2581255, 4130008, 5162510, 10325020, 20650040]

約数ペア:

[(1, 20650040), (2, 10325020), (4, 5162510), (5, 4130008), (8, 2581255), (10, 2065004), (20, 1032502), (40, 516251)]