20655915

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{1549}}^1$

素因数の和:1691

約数の個数: 32

約数和(自身を含む): 38092800

約数和(自身を除く): 17436885

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 127, 381, 635, 889, 1549, 1905, 2667, 4445, 4647, 7745, 10843, 13335, 23235, 32529, 54215, 162645, 196723, 590169, 983615, 1377061, 2950845, 4131183, 6885305, 20655915]

約数ペア:

[(1, 20655915), (3, 6885305), (5, 4131183), (7, 2950845), (15, 1377061), (21, 983615), (35, 590169), (105, 196723), (127, 162645), (381, 54215), (635, 32529), (889, 23235), (1549, 13335), (1905, 10843), (2667, 7745), (4445, 4647)]