15985520

素因数分解:

$2^4\times 5^1\times {\mathrm{199819}}^1$

素因数の和:199832

約数の個数: 20

約数和(自身を含む): 37166520

約数和(自身を除く): 21181000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199819, 399638, 799276, 999095, 1598552, 1998190, 3197104, 3996380, 7992760, 15985520]

約数ペア:

[(1, 15985520), (2, 7992760), (4, 3996380), (5, 3197104), (8, 1998190), (10, 1598552), (16, 999095), (20, 799276), (40, 399638), (80, 199819)]