18262960

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5309}}^1$

素因数の和:5365

約数の個数: 40

約数和(自身を含む): 43457040

約数和(自身を除く): 25194080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5309, 10618, 21236, 26545, 42472, 53090, 84944, 106180, 212360, 228287, 424720, 456574, 913148, 1141435, 1826296, 2282870, 3652592, 4565740, 9131480, 18262960]

約数ペア:

[(1, 18262960), (2, 9131480), (4, 4565740), (5, 3652592), (8, 2282870), (10, 1826296), (16, 1141435), (20, 913148), (40, 456574), (43, 424720), (80, 228287), (86, 212360), (172, 106180), (215, 84944), (344, 53090), (430, 42472), (688, 26545), (860, 21236), (1720, 10618), (3440, 5309)]