Q: What is the sum of all factors of the number 661,491 excluding 661,491?
A: 309,141
The factors of the number 661,491 are: 1, 3, 9, 67, 201, 603, 1097, 3291, 9873, 73499, 220497, 661491.
If you add them up, you will get the total of 661,800. Now subtract 661,491 to get 309,141