Q: What is the sum of all factors of the number 666,880 excluding 666,880?
A: 933,572
The factors of the number 666,880 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 521, 640, 1042, 1280, 2084, 2605, 4168, 5210, 8336, 10420, 16672, 20840, 33344, 41680, 66688, 83360, 133376, 166720, 333440, 666880.
If you add them up, you will get the total of 667,813. Now subtract 666,880 to get 933,572