Q: What is the sum of all factors of the number 217,720 excluding 217,720?

 A: 272,240

Why is 272,240 the sum of all factors of 217,720, excluding 217,720?

The factors of the number 217,720 are: 1, 2, 4, 5, 8, 10, 20, 40, 5443, 10886, 21772, 27215, 43544, 54430, 108860, 217720.

If you add them up, you will get the total of 217,992. Now subtract 217,720 to get 272,240


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