Q: What is the sum of all factors of the number 640,612 excluding 640,612?

 A: 657,692

Why is 657,692 the sum of all factors of 640,612, excluding 640,612?

The factors of the number 640,612 are: 1, 2, 4, 7, 14, 28, 137, 167, 274, 334, 548, 668, 959, 1169, 1918, 2338, 3836, 4676, 22879, 45758, 91516, 160153, 320306, 640612.

If you add them up, you will get the total of 641,269. Now subtract 640,612 to get 657,692


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