Q: What is the sum of all factors of the number 425,420 excluding 425,420?

 A: 481,780

Why is 481,780 the sum of all factors of 425,420, excluding 425,420?

The factors of the number 425,420 are: 1, 2, 4, 5, 10, 20, 89, 178, 239, 356, 445, 478, 890, 956, 1195, 1780, 2390, 4780, 21271, 42542, 85084, 106355, 212710, 425420.

If you add them up, you will get the total of 425,901. Now subtract 425,420 to get 481,780


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