81978660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{455437}}^1$

素因数の和:455452

約数の個数: 36

約数和(自身を含む): 248669148

約数和(自身を除く): 166690488

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 455437, 910874, 1366311, 1821748, 2277185, 2732622, 4098933, 4554370, 5465244, 6831555, 8197866, 9108740, 13663110, 16395732, 20494665, 27326220, 40989330, 81978660]

約数ペア:

[(1, 81978660), (2, 40989330), (3, 27326220), (4, 20494665), (5, 16395732), (6, 13663110), (9, 9108740), (10, 8197866), (12, 6831555), (15, 5465244), (18, 4554370), (20, 4098933), (30, 2732622), (36, 2277185), (45, 1821748), (60, 1366311), (90, 910874), (180, 455437)]