Q: What is the sum of all factors of the number 289,845 excluding 289,845?

 A: 257,355

Why is 257,355 the sum of all factors of 289,845, excluding 289,845?

The factors of the number 289,845 are: 1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 113, 135, 171, 285, 339, 513, 565, 855, 1017, 1695, 2147, 2565, 3051, 5085, 6441, 10735, 15255, 19323, 32205, 57969, 96615, 289845.

If you add them up, you will get the total of 290,102. Now subtract 289,845 to get 257,355


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