Q: What is the sum of all factors of the number 4,202,985 excluding 4,202,985?

Why is 2,521,815 the sum of all factors of 4,202,985, excluding 4,202,985?

The factors of the number 4,202,985 are: 1, 3, 5, 15, 280199, 840597, 1400995, 4202985.

If you add them up, you will get the total of 4,202,987. Now subtract 4,202,985 to get 2,521,815

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