12981140

素因数分解:

$2^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{2087}}^1$

素因数の和:2407

約数の個数: 24

約数和(自身を含む): 27361152

約数和(自身を除く): 14380012

約数列:

[1, 2, 4, 5, 10, 20, 311, 622, 1244, 1555, 2087, 3110, 4174, 6220, 8348, 10435, 20870, 41740, 649057, 1298114, 2596228, 3245285, 6490570, 12981140]

約数ペア:

[(1, 12981140), (2, 6490570), (4, 3245285), (5, 2596228), (10, 1298114), (20, 649057), (311, 41740), (622, 20870), (1244, 10435), (1555, 8348), (2087, 6220), (3110, 4174)]