19806040

素因数分解:

$2^3\times 5^1\times {\mathrm{495151}}^1$

素因数の和:495162

約数の個数: 16

約数和(自身を含む): 44563680

約数和(自身を除く): 24757640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 495151, 990302, 1980604, 2475755, 3961208, 4951510, 9903020, 19806040]

約数ペア:

[(1, 19806040), (2, 9903020), (4, 4951510), (5, 3961208), (8, 2475755), (10, 1980604), (20, 990302), (40, 495151)]