Q: What is the sum of all factors of the number 1,564 excluding 1,564?
A: 1,460
The factors of the number 1,564 are: 1, 2, 4, 17, 23, 34, 46, 68, 92, 391, 782, 1564.
If you add them up, you will get the total of 1,565. Now subtract 1,564 to get 1,460