Q: What is the sum of all factors of the number 78,420 excluding 78,420?

 A: 141,324

Why is 141,324 the sum of all factors of 78,420, excluding 78,420?

The factors of the number 78,420 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 1307, 2614, 3921, 5228, 6535, 7842, 13070, 15684, 19605, 26140, 39210, 78420.

If you add them up, you will get the total of 78,561. Now subtract 78,420 to get 141,324


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