Q: What is the sum of all factors of the number 2,142 excluding 2,142?
A: 3,474
The factors of the number 2,142 are: 1, 2, 3, 6, 7, 9, 14, 17, 18, 21, 34, 42, 51, 63, 102, 119, 126, 153, 238, 306, 357, 714, 1071, 2142.
If you add them up, you will get the total of 2,145. Now subtract 2,142 to get 3,474