20005335

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1549}}^1$

素因数の和:1608

約数の個数: 48

約数和(自身を含む): 40622400

約数和(自身を除く): 20617065

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 41, 45, 63, 105, 123, 205, 287, 315, 369, 615, 861, 1435, 1549, 1845, 2583, 4305, 4647, 7745, 10843, 12915, 13941, 23235, 32529, 54215, 63509, 69705, 97587, 162645, 190527, 317545, 444563, 487935, 571581, 952635, 1333689, 2222815, 2857905, 4001067, 6668445, 20005335]

約数ペア:

[(1, 20005335), (3, 6668445), (5, 4001067), (7, 2857905), (9, 2222815), (15, 1333689), (21, 952635), (35, 571581), (41, 487935), (45, 444563), (63, 317545), (105, 190527), (123, 162645), (205, 97587), (287, 69705), (315, 63509), (369, 54215), (615, 32529), (861, 23235), (1435, 13941), (1549, 12915), (1845, 10843), (2583, 7745), (4305, 4647)]