Q: What is the sum of all factors of the number 287,880 excluding 287,880?

 A: 576,120

Why is 576,120 the sum of all factors of 287,880, excluding 287,880?

The factors of the number 287,880 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 2399, 4798, 7197, 9596, 11995, 14394, 19192, 23990, 28788, 35985, 47980, 57576, 71970, 95960, 143940, 287880.

If you add them up, you will get the total of 288,456. Now subtract 287,880 to get 576,120


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