81783740

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{40487}}^1$

素因数の和:40597

約数の個数: 24

約数和(自身を含む): 173450592

約数和(自身を除く): 91666852

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 40487, 80974, 161948, 202435, 404870, 809740, 4089187, 8178374, 16356748, 20445935, 40891870, 81783740]

約数ペア:

[(1, 81783740), (2, 40891870), (4, 20445935), (5, 16356748), (10, 8178374), (20, 4089187), (101, 809740), (202, 404870), (404, 202435), (505, 161948), (1010, 80974), (2020, 40487)]