Q: What is the sum of all factors of the number 280,680 excluding 280,680?

 A: 561,720

Why is 561,720 the sum of all factors of 280,680, excluding 280,680?

The factors of the number 280,680 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 2339, 4678, 7017, 9356, 11695, 14034, 18712, 23390, 28068, 35085, 46780, 56136, 70170, 93560, 140340, 280680.

If you add them up, you will get the total of 281,241. Now subtract 280,680 to get 561,720


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