Q: What is the sum of all factors of the number 278,878 excluding 278,878?

 A: 139,442

Why is 139,442 the sum of all factors of 278,878, excluding 278,878?

The factors of the number 278,878 are: 1, 2, 139439, 278878.

If you add them up, you will get the total of 279,017. Now subtract 278,878 to get 139,442


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