18725545

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{439}}^1\times {\mathrm{449}}^1$

素因数の和:912

約数の個数: 16

約数和(自身を含む): 23760000

約数和(自身を除く): 5034455

約数列:

[1, 5, 19, 95, 439, 449, 2195, 2245, 8341, 8531, 41705, 42655, 197111, 985555, 3745109, 18725545]

約数ペア:

[(1, 18725545), (5, 3745109), (19, 985555), (95, 197111), (439, 42655), (449, 41705), (2195, 8531), (2245, 8341)]