Q: What is the sum of all factors of the number 640,380 excluding 640,380?
A: 1,292,964
The factors of the number 640,380 are: 1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 821, 1642, 2463, 3284, 4105, 4926, 8210, 9852, 10673, 12315, 16420, 21346, 24630, 32019, 42692, 49260, 53365, 64038, 106730, 128076, 160095, 213460, 320190, 640380.
If you add them up, you will get the total of 640,381. Now subtract 640,380 to get 1,292,964