2857640

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{359}}^1$

素因数の和:569

約数の個数: 32

約数和(自身を含む): 6480000

約数和(自身を除く): 3622360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 359, 398, 718, 796, 995, 1436, 1592, 1795, 1990, 2872, 3590, 3980, 7180, 7960, 14360, 71441, 142882, 285764, 357205, 571528, 714410, 1428820, 2857640]

約数ペア:

[(1, 2857640), (2, 1428820), (4, 714410), (5, 571528), (8, 357205), (10, 285764), (20, 142882), (40, 71441), (199, 14360), (359, 7960), (398, 7180), (718, 3980), (796, 3590), (995, 2872), (1436, 1990), (1592, 1795)]