20299815

素因数分解:

$3^4\times 5^1\times {\mathrm{50123}}^1$

素因数の和:50140

約数の個数: 20

約数和(自身を含む): 36390024

約数和(自身を除く): 16090209

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 50123, 150369, 250615, 451107, 751845, 1353321, 2255535, 4059963, 6766605, 20299815]

約数ペア:

[(1, 20299815), (3, 6766605), (5, 4059963), (9, 2255535), (15, 1353321), (27, 751845), (45, 451107), (81, 250615), (135, 150369), (405, 50123)]