Q: What is the sum of all factors of the number 7,140 excluding 7,140?

A: 17,052

Why is 17,052 the sum of all factors of 7,140, excluding 7,140?

The factors of the number 7,140 are: 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 20, 21, 28, 30, 34, 35, 42, 51, 60, 68, 70, 84, 85, 102, 105, 119, 140, 170, 204, 210, 238, 255, 340, 357, 420, 476, 510, 595, 714, 1020, 1190, 1428, 1785, 2380, 3570, 7140.

If you add them up, you will get the total of 7,157. Now subtract 7,140 to get 17,052