20287211

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^2\times {\mathrm{73}}^1$

素因数の和:183

約数の個数: 24

約数和(自身を含む): 24988320

約数和(自身を除く): 4701109

約数列:

[1, 7, 29, 37, 73, 203, 259, 511, 1073, 1369, 2117, 2701, 7511, 9583, 14819, 18907, 39701, 78329, 99937, 277907, 548303, 699559, 2898173, 20287211]

約数ペア:

[(1, 20287211), (7, 2898173), (29, 699559), (37, 548303), (73, 277907), (203, 99937), (259, 78329), (511, 39701), (1073, 18907), (1369, 14819), (2117, 9583), (2701, 7511)]