Q: What is the sum of all factors of the number 217,987 excluding 217,987?

 A: 70,013

Why is 70,013 the sum of all factors of 217,987, excluding 217,987?

The factors of the number 217,987 are: 1, 7, 11, 19, 77, 133, 149, 209, 1043, 1463, 1639, 2831, 11473, 19817, 31141, 217987.

If you add them up, you will get the total of 218,057. Now subtract 217,987 to get 70,013


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