Q: What is the sum of all factors of the number 1,144 excluding 1,144?
A: 1,376
The factors of the number 1,144 are: 1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 286, 572, 1144.
If you add them up, you will get the total of 1,145. Now subtract 1,144 to get 1,376