320199280

素因数分解:

$2^4\times 5^1\times {\mathrm{359}}^1\times {\mathrm{11149}}^1$

素因数の和:11521

約数の個数: 40

約数和(自身を含む): 746604000

約数和(自身を除く): 426404720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 359, 718, 1436, 1795, 2872, 3590, 5744, 7180, 11149, 14360, 22298, 28720, 44596, 55745, 89192, 111490, 178384, 222980, 445960, 891920, 4002491, 8004982, 16009964, 20012455, 32019928, 40024910, 64039856, 80049820, 160099640, 320199280]

約数ペア:

[(1, 320199280), (2, 160099640), (4, 80049820), (5, 64039856), (8, 40024910), (10, 32019928), (16, 20012455), (20, 16009964), (40, 8004982), (80, 4002491), (359, 891920), (718, 445960), (1436, 222980), (1795, 178384), (2872, 111490), (3590, 89192), (5744, 55745), (7180, 44596), (11149, 28720), (14360, 22298)]