Q: What is the sum of all factors of the number 39,966 excluding 39,966?
A: 39,978
The factors of the number 39,966 are: 1, 2, 3, 6, 6661, 13322, 19983, 39966.
If you add them up, you will get the total of 40,005. Now subtract 39,966 to get 39,978