Q: What is the sum of all factors of the number 61,400 excluding 61,400?

 A: 81,820

Why is 81,820 the sum of all factors of 61,400, excluding 61,400?

The factors of the number 61,400 are: 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 307, 614, 1228, 1535, 2456, 3070, 6140, 7675, 12280, 15350, 30700, 61400.

If you add them up, you will get the total of 61,481. Now subtract 61,400 to get 81,820


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