12990160

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2287}}^1$

素因数の和:2371

約数の個数: 40

約数和(自身を含む): 30640896

約数和(自身を除く): 17650736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2287, 2840, 4574, 5680, 9148, 11435, 18296, 22870, 36592, 45740, 91480, 162377, 182960, 324754, 649508, 811885, 1299016, 1623770, 2598032, 3247540, 6495080, 12990160]

約数ペア:

[(1, 12990160), (2, 6495080), (4, 3247540), (5, 2598032), (8, 1623770), (10, 1299016), (16, 811885), (20, 649508), (40, 324754), (71, 182960), (80, 162377), (142, 91480), (284, 45740), (355, 36592), (568, 22870), (710, 18296), (1136, 11435), (1420, 9148), (2287, 5680), (2840, 4574)]