31218640

素因数分解:

$2^4\times 5^1\times {\mathrm{359}}^1\times {\mathrm{1087}}^1$

素因数の和:1459

約数の個数: 40

約数和(自身を含む): 72852480

約数和(自身を除く): 41633840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 359, 718, 1087, 1436, 1795, 2174, 2872, 3590, 4348, 5435, 5744, 7180, 8696, 10870, 14360, 17392, 21740, 28720, 43480, 86960, 390233, 780466, 1560932, 1951165, 3121864, 3902330, 6243728, 7804660, 15609320, 31218640]

約数ペア:

[(1, 31218640), (2, 15609320), (4, 7804660), (5, 6243728), (8, 3902330), (10, 3121864), (16, 1951165), (20, 1560932), (40, 780466), (80, 390233), (359, 86960), (718, 43480), (1087, 28720), (1436, 21740), (1795, 17392), (2174, 14360), (2872, 10870), (3590, 8696), (4348, 7180), (5435, 5744)]