28667840

素因数分解:

$2^6\times 5^1\times {\mathrm{101}}^1\times {\mathrm{887}}^1$

素因数の和:1005

約数の個数: 56

約数和(自身を含む): 69018912

約数和(自身を除く): 40351072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 101, 160, 202, 320, 404, 505, 808, 887, 1010, 1616, 1774, 2020, 3232, 3548, 4040, 4435, 6464, 7096, 8080, 8870, 14192, 16160, 17740, 28384, 32320, 35480, 56768, 70960, 89587, 141920, 179174, 283840, 358348, 447935, 716696, 895870, 1433392, 1791740, 2866784, 3583480, 5733568, 7166960, 14333920, 28667840]

約数ペア:

[(1, 28667840), (2, 14333920), (4, 7166960), (5, 5733568), (8, 3583480), (10, 2866784), (16, 1791740), (20, 1433392), (32, 895870), (40, 716696), (64, 447935), (80, 358348), (101, 283840), (160, 179174), (202, 141920), (320, 89587), (404, 70960), (505, 56768), (808, 35480), (887, 32320), (1010, 28384), (1616, 17740), (1774, 16160), (2020, 14192), (3232, 8870), (3548, 8080), (4040, 7096), (4435, 6464)]