64404820

素因数分解:

$2^2\times 5^1\times {\mathrm{1543}}^1\times {\mathrm{2087}}^1$

素因数の和:3639

約数の個数: 24

約数和(自身を含む): 135402624

約数和(自身を除く): 70997804

約数列:

[1, 2, 4, 5, 10, 20, 1543, 2087, 3086, 4174, 6172, 7715, 8348, 10435, 15430, 20870, 30860, 41740, 3220241, 6440482, 12880964, 16101205, 32202410, 64404820]

約数ペア:

[(1, 64404820), (2, 32202410), (4, 16101205), (5, 12880964), (10, 6440482), (20, 3220241), (1543, 41740), (2087, 30860), (3086, 20870), (4174, 15430), (6172, 10435), (7715, 8348)]