123559640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71837}}^1$

素因数の和:71891

約数の個数: 32

約数和(自身を含む): 284478480

約数和(自身を除く): 160918840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 71837, 143674, 287348, 359185, 574696, 718370, 1436740, 2873480, 3088991, 6177982, 12355964, 15444955, 24711928, 30889910, 61779820, 123559640]

約数ペア:

[(1, 123559640), (2, 61779820), (4, 30889910), (5, 24711928), (8, 15444955), (10, 12355964), (20, 6177982), (40, 3088991), (43, 2873480), (86, 1436740), (172, 718370), (215, 574696), (344, 359185), (430, 287348), (860, 143674), (1720, 71837)]