Q: What is the sum of all factors of the number 128,020 excluding 128,020?

 A: 149,684

Why is 149,684 the sum of all factors of 128,020, excluding 128,020?

The factors of the number 128,020 are: 1, 2, 4, 5, 10, 20, 37, 74, 148, 173, 185, 346, 370, 692, 740, 865, 1730, 3460, 6401, 12802, 25604, 32005, 64010, 128020.

If you add them up, you will get the total of 128,169. Now subtract 128,020 to get 149,684


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