20801655

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{66037}}^1$

素因数の和:66055

約数の個数: 24

約数和(自身を含む): 41207712

約数和(自身を除く): 20406057

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 66037, 198111, 330185, 462259, 594333, 990555, 1386777, 2311295, 2971665, 4160331, 6933885, 20801655]

約数ペア:

[(1, 20801655), (3, 6933885), (5, 4160331), (7, 2971665), (9, 2311295), (15, 1386777), (21, 990555), (35, 594333), (45, 462259), (63, 330185), (105, 198111), (315, 66037)]