20216440

素因数分解:

$2^3\times 5^1\times {\mathrm{505411}}^1$

素因数の和:505422

約数の個数: 16

約数和(自身を含む): 45487080

約数和(自身を除く): 25270640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 505411, 1010822, 2021644, 2527055, 4043288, 5054110, 10108220, 20216440]

約数ペア:

[(1, 20216440), (2, 10108220), (4, 5054110), (5, 4043288), (8, 2527055), (10, 2021644), (20, 1010822), (40, 505411)]