18461620

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{21467}}^1$

素因数の和:21519

約数の個数: 24

約数和(自身を含む): 39672864

約数和(自身を除く): 21211244

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 21467, 42934, 85868, 107335, 214670, 429340, 923081, 1846162, 3692324, 4615405, 9230810, 18461620]

約数ペア:

[(1, 18461620), (2, 9230810), (4, 4615405), (5, 3692324), (10, 1846162), (20, 923081), (43, 429340), (86, 214670), (172, 107335), (215, 85868), (430, 42934), (860, 21467)]