6447640

素因数分解:

$2^3\times 5^1\times {\mathrm{359}}^1\times {\mathrm{449}}^1$

素因数の和:819

約数の個数: 32

約数和(自身を含む): 14580000

約数和(自身を除く): 8132360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 359, 449, 718, 898, 1436, 1795, 1796, 2245, 2872, 3590, 3592, 4490, 7180, 8980, 14360, 17960, 161191, 322382, 644764, 805955, 1289528, 1611910, 3223820, 6447640]

約数ペア:

[(1, 6447640), (2, 3223820), (4, 1611910), (5, 1289528), (8, 805955), (10, 644764), (20, 322382), (40, 161191), (359, 17960), (449, 14360), (718, 8980), (898, 7180), (1436, 4490), (1795, 3592), (1796, 3590), (2245, 2872)]