20409080

素因数分解:

$2^3\times 5^1\times {\mathrm{510227}}^1$

素因数の和:510238

約数の個数: 16

約数和(自身を含む): 45920520

約数和(自身を除く): 25511440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 510227, 1020454, 2040908, 2551135, 4081816, 5102270, 10204540, 20409080]

約数ペア:

[(1, 20409080), (2, 10204540), (4, 5102270), (5, 4081816), (8, 2551135), (10, 2040908), (20, 1020454), (40, 510227)]