80499740

素因数分解:

$2^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{6221}}^1$

素因数の和:6877

約数の個数: 24

約数和(自身を含む): 169337952

約数和(自身を除く): 88838212

約数列:

[1, 2, 4, 5, 10, 20, 647, 1294, 2588, 3235, 6221, 6470, 12442, 12940, 24884, 31105, 62210, 124420, 4024987, 8049974, 16099948, 20124935, 40249870, 80499740]

約数ペア:

[(1, 80499740), (2, 40249870), (4, 20124935), (5, 16099948), (10, 8049974), (20, 4024987), (647, 124420), (1294, 62210), (2588, 31105), (3235, 24884), (6221, 12940), (6470, 12442)]