19722160

素因数分解:

$2^4\times 5^1\times {\mathrm{246527}}^1$

素因数の和:246540

約数の個数: 20

約数和(自身を含む): 45854208

約数和(自身を除く): 26132048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 246527, 493054, 986108, 1232635, 1972216, 2465270, 3944432, 4930540, 9861080, 19722160]

約数ペア:

[(1, 19722160), (2, 9861080), (4, 4930540), (5, 3944432), (8, 2465270), (10, 1972216), (16, 1232635), (20, 986108), (40, 493054), (80, 246527)]