20804445

素因数分解:

$3^5\times 5^1\times {\mathrm{17123}}^1$

素因数の和:17143

約数の個数: 24

約数和(自身を含む): 37398816

約数和(自身を除く): 16594371

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 17123, 51369, 85615, 154107, 256845, 462321, 770535, 1386963, 2311605, 4160889, 6934815, 20804445]

約数ペア:

[(1, 20804445), (3, 6934815), (5, 4160889), (9, 2311605), (15, 1386963), (27, 770535), (45, 462321), (81, 256845), (135, 154107), (243, 85615), (405, 51369), (1215, 17123)]