Q: What is the sum of all factors of the number 172,680 excluding 172,680?

 A: 345,720

Why is 345,720 the sum of all factors of 172,680, excluding 172,680?

The factors of the number 172,680 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 1439, 2878, 4317, 5756, 7195, 8634, 11512, 14390, 17268, 21585, 28780, 34536, 43170, 57560, 86340, 172680.

If you add them up, you will get the total of 173,025. Now subtract 172,680 to get 345,720


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