Q: What is the sum of all factors of the number 28,220 excluding 28,220?

 A: 35,284

Why is 35,284 the sum of all factors of 28,220, excluding 28,220?

The factors of the number 28,220 are: 1, 2, 4, 5, 10, 17, 20, 34, 68, 83, 85, 166, 170, 332, 340, 415, 830, 1411, 1660, 2822, 5644, 7055, 14110, 28220.

If you add them up, you will get the total of 28,255. Now subtract 28,220 to get 35,284


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