Q: What is the sum of all factors of the number 39,878 excluding 39,878?

 A: 20,794

Why is 20,794 the sum of all factors of 39,878, excluding 39,878?

The factors of the number 39,878 are: 1, 2, 127, 157, 254, 314, 19939, 39878.

If you add them up, you will get the total of 39,898. Now subtract 39,878 to get 20,794


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