18587180

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{21613}}^1$

素因数の和:21665

約数の個数: 24

約数和(自身を含む): 39942672

約数和(自身を除く): 21355492

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 21613, 43226, 86452, 108065, 216130, 432260, 929359, 1858718, 3717436, 4646795, 9293590, 18587180]

約数ペア:

[(1, 18587180), (2, 9293590), (4, 4646795), (5, 3717436), (10, 1858718), (20, 929359), (43, 432260), (86, 216130), (172, 108065), (215, 86452), (430, 43226), (860, 21613)]