Q: What is the sum of all factors of the number 641,640 excluding 641,640?
A: 1,283,640
The factors of the number 641,640 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 5347, 10694, 16041, 21388, 26735, 32082, 42776, 53470, 64164, 80205, 106940, 128328, 160410, 213880, 320820, 641640.
If you add them up, you will get the total of 641,641. Now subtract 641,640 to get 1,283,640