Q: What is the sum of all factors of the number 89,999 excluding 89,999?

A: 28,273

Why is 28,273 the sum of all factors of 89,999, excluding 89,999?

The factors of the number 89,999 are: 1, 7, 13, 23, 43, 91, 161, 299, 301, 559, 989, 2093, 3913, 6923, 12857, 89999.

If you add them up, you will get the total of 90,027. Now subtract 89,999 to get 28,273

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