Q: What is the sum of all factors of the number 641,112,520 excluding 641,112,520?

 A: 801,390,740

Why is 801,390,740 the sum of all factors of 641,112,520, excluding 641,112,520?

The factors of the number 641,112,520 are: 1, 2, 4, 5, 8, 10, 20, 40, 16027813, 32055626, 64111252, 80139065, 128222504, 160278130, 320556260, 641112520.

If you add them up, you will get the total of 641,113,321. Now subtract 641,112,520 to get 801,390,740


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