16920405

素因数分解:

$3^2\times 5^1\times {\mathrm{376009}}^1$

素因数の和:376020

約数の個数: 12

約数和(自身を含む): 29328780

約数和(自身を除く): 12408375

約数列:

[1, 3, 5, 9, 15, 45, 376009, 1128027, 1880045, 3384081, 5640135, 16920405]

約数ペア:

[(1, 16920405), (3, 5640135), (5, 3384081), (9, 1880045), (15, 1128027), (45, 376009)]