20845845

素因数分解:

$3^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{3109}}^1$

素因数の和:3269

約数の個数: 24

約数和(自身を含む): 36387000

約数和(自身を除く): 15541155

約数列:

[1, 3, 5, 9, 15, 45, 149, 447, 745, 1341, 2235, 3109, 6705, 9327, 15545, 27981, 46635, 139905, 463241, 1389723, 2316205, 4169169, 6948615, 20845845]

約数ペア:

[(1, 20845845), (3, 6948615), (5, 4169169), (9, 2316205), (15, 1389723), (45, 463241), (149, 139905), (447, 46635), (745, 27981), (1341, 15545), (2235, 9327), (3109, 6705)]