11991640

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{859}}^1$

素因数の和:1219

約数の個数: 32

約数和(自身を含む): 27090000

約数和(自身を除く): 15098360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 859, 1396, 1718, 1745, 2792, 3436, 3490, 4295, 6872, 6980, 8590, 13960, 17180, 34360, 299791, 599582, 1199164, 1498955, 2398328, 2997910, 5995820, 11991640]

約数ペア:

[(1, 11991640), (2, 5995820), (4, 2997910), (5, 2398328), (8, 1498955), (10, 1199164), (20, 599582), (40, 299791), (349, 34360), (698, 17180), (859, 13960), (1396, 8590), (1718, 6980), (1745, 6872), (2792, 4295), (3436, 3490)]