18110740

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{21059}}^1$

素因数の和:21111

約数の個数: 24

約数和(自身を含む): 38918880

約数和(自身を除く): 20808140

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 21059, 42118, 84236, 105295, 210590, 421180, 905537, 1811074, 3622148, 4527685, 9055370, 18110740]

約数ペア:

[(1, 18110740), (2, 9055370), (4, 4527685), (5, 3622148), (10, 1811074), (20, 905537), (43, 421180), (86, 210590), (172, 105295), (215, 84236), (430, 42118), (860, 21059)]