Q: What is the sum of all factors of the number 1,080 excluding 1,080?
A: 2,520
The factors of the number 1,080 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 135, 180, 216, 270, 360, 540, 1080.
If you add them up, you will get the total of 1,082. Now subtract 1,080 to get 2,520