19966040

素因数分解:

$2^3\times 5^1\times {\mathrm{499151}}^1$

素因数の和:499162

約数の個数: 16

約数和(自身を含む): 44923680

約数和(自身を除く): 24957640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 499151, 998302, 1996604, 2495755, 3993208, 4991510, 9983020, 19966040]

約数ペア:

[(1, 19966040), (2, 9983020), (4, 4991510), (5, 3993208), (8, 2495755), (10, 1996604), (20, 998302), (40, 499151)]