19705520

素因数分解:

$2^4\times 5^1\times {\mathrm{246319}}^1$

素因数の和:246332

約数の個数: 20

約数和(自身を含む): 45815520

約数和(自身を除く): 26110000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 246319, 492638, 985276, 1231595, 1970552, 2463190, 3941104, 4926380, 9852760, 19705520]

約数ペア:

[(1, 19705520), (2, 9852760), (4, 4926380), (5, 3941104), (8, 2463190), (10, 1970552), (16, 1231595), (20, 985276), (40, 492638), (80, 246319)]