Q: What is the sum of all factors of the number 21,460 excluding 21,460?

 A: 26,420

Why is 26,420 the sum of all factors of 21,460, excluding 21,460?

The factors of the number 21,460 are: 1, 2, 4, 5, 10, 20, 29, 37, 58, 74, 116, 145, 148, 185, 290, 370, 580, 740, 1073, 2146, 4292, 5365, 10730, 21460.

If you add them up, you will get the total of 21,486. Now subtract 21,460 to get 26,420


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