Q: What is the sum of all factors of the number 1,280,742 excluding 1,280,742?

 A: 1,304,778

Why is 1,304,778 the sum of all factors of 1,280,742, excluding 1,280,742?

The factors of the number 1,280,742 are: 1, 2, 3, 6, 113, 226, 339, 678, 1889, 3778, 5667, 11334, 213457, 426914, 640371, 1280742.

If you add them up, you will get the total of 1,280,743. Now subtract 1,280,742 to get 1,304,778


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