11389815

素因数分解:

$3^4\times 5^1\times {\mathrm{28123}}^1$

素因数の和:28140

約数の個数: 20

約数和(自身を含む): 20418024

約数和(自身を除く): 9028209

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 28123, 84369, 140615, 253107, 421845, 759321, 1265535, 2277963, 3796605, 11389815]

約数ペア:

[(1, 11389815), (3, 3796605), (5, 2277963), (9, 1265535), (15, 759321), (27, 421845), (45, 253107), (81, 140615), (135, 84369), (405, 28123)]