Q: What is the sum of all factors of the number 7,791 excluding 7,791?
A: 4,521
The factors of the number 7,791 are: 1, 3, 7, 21, 49, 53, 147, 159, 371, 1113, 2597, 7791.
If you add them up, you will get the total of 7,795. Now subtract 7,791 to get 4,521