Q: What is the sum of all factors of the number 15,963 excluding 15,963?
A: 6,645
The factors of the number 15,963 are: 1, 3, 17, 51, 313, 939, 5321, 15963.
If you add them up, you will get the total of 15,969. Now subtract 15,963 to get 6,645