Q: What is the sum of all factors of the number 71,780 excluding 71,780?

 A: 84,628

Why is 84,628 the sum of all factors of 71,780, excluding 71,780?

The factors of the number 71,780 are: 1, 2, 4, 5, 10, 20, 37, 74, 97, 148, 185, 194, 370, 388, 485, 740, 970, 1940, 3589, 7178, 14356, 17945, 35890, 71780.

If you add them up, you will get the total of 71,864. Now subtract 71,780 to get 84,628


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