12564220

素因数分解:

$2^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{977}}^1$

素因数の和:1629

約数の個数: 24

約数和(自身を含む): 26452944

約数和(自身を除く): 13888724

約数列:

[1, 2, 4, 5, 10, 20, 643, 977, 1286, 1954, 2572, 3215, 3908, 4885, 6430, 9770, 12860, 19540, 628211, 1256422, 2512844, 3141055, 6282110, 12564220]

約数ペア:

[(1, 12564220), (2, 6282110), (4, 3141055), (5, 2512844), (10, 1256422), (20, 628211), (643, 19540), (977, 12860), (1286, 9770), (1954, 6430), (2572, 4885), (3215, 3908)]