21790845

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{10303}}^1$

素因数の和:10361

約数の個数: 24

約数和(自身を含む): 38578176

約数和(自身を除く): 16787331

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 10303, 30909, 51515, 92727, 154545, 463635, 484241, 1452723, 2421205, 4358169, 7263615, 21790845]

約数ペア:

[(1, 21790845), (3, 7263615), (5, 4358169), (9, 2421205), (15, 1452723), (45, 484241), (47, 463635), (141, 154545), (235, 92727), (423, 51515), (705, 30909), (2115, 10303)]