Q: What is the sum of all factors of the number 13,788 excluding 13,788?
A: 21,156
The factors of the number 13,788 are: 1, 2, 3, 4, 6, 9, 12, 18, 36, 383, 766, 1149, 1532, 2298, 3447, 4596, 6894, 13788.
If you add them up, you will get the total of 13,809. Now subtract 13,788 to get 21,156