18385240

素因数分解:

$2^3\times 5^1\times {\mathrm{459631}}^1$

素因数の和:459642

約数の個数: 16

約数和(自身を含む): 41366880

約数和(自身を除く): 22981640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 459631, 919262, 1838524, 2298155, 3677048, 4596310, 9192620, 18385240]

約数ペア:

[(1, 18385240), (2, 9192620), (4, 4596310), (5, 3677048), (8, 2298155), (10, 1838524), (20, 919262), (40, 459631)]