Q: What is the sum of all factors of the number 39,742 excluding 39,742?

 A: 21,890

Why is 21,890 the sum of all factors of 39,742, excluding 39,742?

The factors of the number 39,742 are: 1, 2, 31, 62, 641, 1282, 19871, 39742.

If you add them up, you will get the total of 39,763. Now subtract 39,742 to get 21,890


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