Q: What is the sum of all factors of the number 13,890,980 excluding 13,890,980?

 A: 15,280,120

Why is 15,280,120 the sum of all factors of 13,890,980, excluding 13,890,980?

The factors of the number 13,890,980 are: 1, 2, 4, 5, 10, 20, 694549, 1389098, 2778196, 3472745, 6945490, 13890980.

If you add them up, you will get the total of 13,890,995. Now subtract 13,890,980 to get 15,280,120


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