Q: What is the sum of all factors of the number 97,720 excluding 97,720?

 A: 154,280

Why is 154,280 the sum of all factors of 97,720, excluding 97,720?

The factors of the number 97,720 are: 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 349, 698, 1396, 1745, 2443, 2792, 3490, 4886, 6980, 9772, 12215, 13960, 19544, 24430, 48860, 97720.

If you add them up, you will get the total of 97,874. Now subtract 97,720 to get 154,280


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