Q: What is the sum of all factors of the number 157,640 excluding 157,640?

 A: 248,440

Why is 248,440 the sum of all factors of 157,640, excluding 157,640?

The factors of the number 157,640 are: 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 563, 1126, 2252, 2815, 3941, 4504, 5630, 7882, 11260, 15764, 19705, 22520, 31528, 39410, 78820, 157640.

If you add them up, you will get the total of 157,888. Now subtract 157,640 to get 248,440


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