Q: What is the sum of all factors of the number 289,840 excluding 289,840?

 A: 384,224

Why is 384,224 the sum of all factors of 289,840, excluding 289,840?

The factors of the number 289,840 are: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3623, 7246, 14492, 18115, 28984, 36230, 57968, 72460, 144920, 289840.

If you add them up, you will get the total of 290,224. Now subtract 289,840 to get 384,224


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