Q: What is the sum of all factors of the number 400,900 excluding 400,900?
A: 519,180
The factors of the number 400,900 are: 1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 211, 380, 422, 475, 844, 950, 1055, 1900, 2110, 4009, 4220, 5275, 8018, 10550, 16036, 20045, 21100, 40090, 80180, 100225, 200450, 400900.
If you add them up, you will get the total of 401,419. Now subtract 400,900 to get 519,180