Q: What is the sum of all factors of the number 689,984 excluding 689,984?

 A: 679,330

Why is 679,330 the sum of all factors of 689,984, excluding 689,984?

The factors of the number 689,984 are: 1, 2, 4, 8, 16, 32, 64, 10781, 21562, 43124, 86248, 172496, 344992, 689984.

If you add them up, you will get the total of 690,663. Now subtract 689,984 to get 679,330


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