21566960

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3797}}^1$

素因数の和:3881

約数の個数: 40

約数和(自身を含む): 50862816

約数和(自身を除く): 29295856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3797, 5680, 7594, 15188, 18985, 30376, 37970, 60752, 75940, 151880, 269587, 303760, 539174, 1078348, 1347935, 2156696, 2695870, 4313392, 5391740, 10783480, 21566960]

約数ペア:

[(1, 21566960), (2, 10783480), (4, 5391740), (5, 4313392), (8, 2695870), (10, 2156696), (16, 1347935), (20, 1078348), (40, 539174), (71, 303760), (80, 269587), (142, 151880), (284, 75940), (355, 60752), (568, 37970), (710, 30376), (1136, 18985), (1420, 15188), (2840, 7594), (3797, 5680)]