20218960

素因数分解:

$2^4\times 5^1\times {\mathrm{252737}}^1$

素因数の和:252750

約数の個数: 20

約数和(自身を含む): 47009268

約数和(自身を除く): 26790308

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 252737, 505474, 1010948, 1263685, 2021896, 2527370, 4043792, 5054740, 10109480, 20218960]

約数ペア:

[(1, 20218960), (2, 10109480), (4, 5054740), (5, 4043792), (8, 2527370), (10, 2021896), (16, 1263685), (20, 1010948), (40, 505474), (80, 252737)]