Q: What is the sum of all factors of the number 678,712 excluding 678,712?

 A: 624,128

Why is 624,128 the sum of all factors of 678,712, excluding 678,712?

The factors of the number 678,712 are: 1, 2, 4, 8, 43, 86, 172, 344, 1973, 3946, 7892, 15784, 84839, 169678, 339356, 678712.

If you add them up, you will get the total of 679,336. Now subtract 678,712 to get 624,128


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