Q: What is the sum of all factors of the number 7,878 excluding 7,878?
A: 9,258
The factors of the number 7,878 are: 1, 2, 3, 6, 13, 26, 39, 78, 101, 202, 303, 606, 1313, 2626, 3939, 7878.
If you add them up, you will get the total of 7,887. Now subtract 7,878 to get 9,258