18008680

素因数分解:

$2^3\times 5^1\times {\mathrm{450217}}^1$

素因数の和:450228

約数の個数: 16

約数和(自身を含む): 40519620

約数和(自身を除く): 22510940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 450217, 900434, 1800868, 2251085, 3601736, 4502170, 9004340, 18008680]

約数ペア:

[(1, 18008680), (2, 9004340), (4, 4502170), (5, 3601736), (8, 2251085), (10, 1800868), (20, 900434), (40, 450217)]