Q: What is the sum of all factors of the number 280,028 excluding 280,028?
A: 291,844
The factors of the number 280,028 are: 1, 2, 4, 7, 14, 28, 73, 137, 146, 274, 292, 511, 548, 959, 1022, 1918, 2044, 3836, 10001, 20002, 40004, 70007, 140014, 280028.
If you add them up, you will get the total of 280,319. Now subtract 280,028 to get 291,844