90291920

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{8887}}^1$

素因数の和:9027

約数の個数: 40

約数和(自身を含む): 211605504

約数和(自身を除く): 121313584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 2032, 2540, 5080, 8887, 10160, 17774, 35548, 44435, 71096, 88870, 142192, 177740, 355480, 710960, 1128649, 2257298, 4514596, 5643245, 9029192, 11286490, 18058384, 22572980, 45145960, 90291920]

約数ペア:

[(1, 90291920), (2, 45145960), (4, 22572980), (5, 18058384), (8, 11286490), (10, 9029192), (16, 5643245), (20, 4514596), (40, 2257298), (80, 1128649), (127, 710960), (254, 355480), (508, 177740), (635, 142192), (1016, 88870), (1270, 71096), (2032, 44435), (2540, 35548), (5080, 17774), (8887, 10160)]