Q: What is the sum of all factors of the number 1,390,640 excluding 1,390,640?
A: 1,842,784
The factors of the number 1,390,640 are: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 17383, 34766, 69532, 86915, 139064, 173830, 278128, 347660, 695320, 1390640.
If you add them up, you will get the total of 1,390,641. Now subtract 1,390,640 to get 1,842,784