3997580

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1979}}^1$

素因数の和:2089

約数の個数: 24

約数和(自身を含む): 8482320

約数和(自身を除く): 4484740

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 1979, 2020, 3958, 7916, 9895, 19790, 39580, 199879, 399758, 799516, 999395, 1998790, 3997580]

約数ペア:

[(1, 3997580), (2, 1998790), (4, 999395), (5, 799516), (10, 399758), (20, 199879), (101, 39580), (202, 19790), (404, 9895), (505, 7916), (1010, 3958), (1979, 2020)]