2139640

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{359}}^1$

素因数の和:519

約数の個数: 32

約数和(自身を含む): 4860000

約数和(自身を除く): 2720360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 359, 596, 718, 745, 1192, 1436, 1490, 1795, 2872, 2980, 3590, 5960, 7180, 14360, 53491, 106982, 213964, 267455, 427928, 534910, 1069820, 2139640]

約数ペア:

[(1, 2139640), (2, 1069820), (4, 534910), (5, 427928), (8, 267455), (10, 213964), (20, 106982), (40, 53491), (149, 14360), (298, 7180), (359, 5960), (596, 3590), (718, 2980), (745, 2872), (1192, 1795), (1436, 1490)]