Q: What is the sum of all factors of the number 640,256 excluding 640,256?
A: 690,388
The factors of the number 640,256 are: 1, 2, 4, 8, 16, 32, 41, 61, 64, 82, 122, 128, 164, 244, 256, 328, 488, 656, 976, 1312, 1952, 2501, 2624, 3904, 5002, 5248, 7808, 10004, 10496, 15616, 20008, 40016, 80032, 160064, 320128, 640256.
If you add them up, you will get the total of 640,946. Now subtract 640,256 to get 690,388