Q: What is the sum of all factors of the number 25,420 excluding 25,420?

 A: 31,028

Why is 31,028 the sum of all factors of 25,420, excluding 25,420?

The factors of the number 25,420 are: 1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 164, 205, 310, 410, 620, 820, 1271, 2542, 5084, 6355, 12710, 25420.

If you add them up, you will get the total of 25,451. Now subtract 25,420 to get 31,028


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