Q: What is the sum of all factors of the number 121,890 excluding 121,890?

 A: 189,150

Why is 189,150 the sum of all factors of 121,890, excluding 121,890?

The factors of the number 121,890 are: 1, 2, 3, 5, 6, 10, 15, 17, 30, 34, 51, 85, 102, 170, 239, 255, 478, 510, 717, 1195, 1434, 2390, 3585, 4063, 7170, 8126, 12189, 20315, 24378, 40630, 60945, 121890.

If you add them up, you will get the total of 122,079. Now subtract 121,890 to get 189,150


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