18810040

素因数分解:

$2^3\times 5^1\times {\mathrm{470251}}^1$

素因数の和:470262

約数の個数: 16

約数和(自身を含む): 42322680

約数和(自身を除く): 23512640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 470251, 940502, 1881004, 2351255, 3762008, 4702510, 9405020, 18810040]

約数ペア:

[(1, 18810040), (2, 9405020), (4, 4702510), (5, 3762008), (8, 2351255), (10, 1881004), (20, 940502), (40, 470251)]