18724780

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{21773}}^1$

素因数の和:21825

約数の個数: 24

約数和(自身を含む): 40238352

約数和(自身を除く): 21513572

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 21773, 43546, 87092, 108865, 217730, 435460, 936239, 1872478, 3744956, 4681195, 9362390, 18724780]

約数ペア:

[(1, 18724780), (2, 9362390), (4, 4681195), (5, 3744956), (10, 1872478), (20, 936239), (43, 435460), (86, 217730), (172, 108865), (215, 87092), (430, 43546), (860, 21773)]