Q: What is the sum of all factors of the number 640,045 excluding 640,045?

 A: 237,779

Why is 237,779 the sum of all factors of 640,045, excluding 640,045?

The factors of the number 640,045 are: 1, 5, 7, 35, 18287, 91435, 128009, 640045.

If you add them up, you will get the total of 640,282. Now subtract 640,045 to get 237,779


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