Q: What is the sum of all factors of the number 187,780 excluding 187,780?

 A: 217,940

Why is 217,940 the sum of all factors of 187,780, excluding 187,780?

The factors of the number 187,780 are: 1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 229, 410, 458, 820, 916, 1145, 2290, 4580, 9389, 18778, 37556, 46945, 93890, 187780.

If you add them up, you will get the total of 187,997. Now subtract 187,780 to get 217,940


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