19942040

素因数分解:

$2^3\times 5^1\times {\mathrm{498551}}^1$

素因数の和:498562

約数の個数: 16

約数和(自身を含む): 44869680

約数和(自身を除く): 24927640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 498551, 997102, 1994204, 2492755, 3988408, 4985510, 9971020, 19942040]

約数ペア:

[(1, 19942040), (2, 9971020), (4, 4985510), (5, 3988408), (8, 2492755), (10, 1994204), (20, 997102), (40, 498551)]