80571740

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{39887}}^1$

素因数の和:39997

約数の個数: 24

約数和(自身を含む): 170880192

約数和(自身を除く): 90308452

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 39887, 79774, 159548, 199435, 398870, 797740, 4028587, 8057174, 16114348, 20142935, 40285870, 80571740]

約数ペア:

[(1, 80571740), (2, 40285870), (4, 20142935), (5, 16114348), (10, 8057174), (20, 4028587), (101, 797740), (202, 398870), (404, 199435), (505, 159548), (1010, 79774), (2020, 39887)]