Q: What is the sum of all factors of the number 40,145 excluding 40,145?

 A: 18,223

Why is 18,223 the sum of all factors of 40,145, excluding 40,145?

The factors of the number 40,145 are: 1, 5, 7, 31, 35, 37, 155, 185, 217, 259, 1085, 1147, 1295, 5735, 8029, 40145.

If you add them up, you will get the total of 40,163. Now subtract 40,145 to get 18,223


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