Q: What is the sum of all factors of the number 27,520 excluding 27,520?

 A: 39,800

Why is 39,800 the sum of all factors of 27,520, excluding 27,520?

The factors of the number 27,520 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 128, 160, 172, 215, 320, 344, 430, 640, 688, 860, 1376, 1720, 2752, 3440, 5504, 6880, 13760, 27520.

If you add them up, you will get the total of 27,559. Now subtract 27,520 to get 39,800


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