Q: What is the sum of all factors of the number 28,143 excluding 28,143?

 A: 13,977

Why is 13,977 the sum of all factors of 28,143, excluding 28,143?

The factors of the number 28,143 are: 1, 3, 9, 53, 59, 159, 177, 477, 531, 3127, 9381, 28143.

If you add them up, you will get the total of 28,156. Now subtract 28,143 to get 13,977


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