Q: What is the sum of all factors of the number 640,444 excluding 640,444?
A: 659,876
The factors of the number 640,444 are: 1, 2, 4, 7, 14, 28, 89, 178, 257, 356, 514, 623, 1028, 1246, 1799, 2492, 3598, 7196, 22873, 45746, 91492, 160111, 320222, 640444.
If you add them up, you will get the total of 641,103. Now subtract 640,444 to get 659,876