Q: What is the sum of all factors of the number 13,878 excluding 13,878?
A: 17,082
The factors of the number 13,878 are: 1, 2, 3, 6, 9, 18, 27, 54, 257, 514, 771, 1542, 2313, 4626, 6939, 13878.
If you add them up, you will get the total of 13,895. Now subtract 13,878 to get 17,082