19944672040

素因数分解:

$2^3\times 5^1\times {\mathrm{498616801}}^1$

素因数の和:498616812

約数の個数: 16

約数和(自身を含む): 44875512180

約数和(自身を除く): 24930840140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 498616801, 997233602, 1994467204, 2493084005, 3988934408, 4986168010, 9972336020, 19944672040]

約数ペア:

[(1, 19944672040), (2, 9972336020), (4, 4986168010), (5, 3988934408), (8, 2493084005), (10, 1994467204), (20, 997233602), (40, 498616801)]