Q: What is the sum of all factors of the number 309,703,920 excluding 309,703,920?

A: 650,378,976

Why is 650,378,976 the sum of all factors of 309,703,920, excluding 309,703,920?

The factors of the number 309,703,920 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 1290433, 2580866, 3871299, 5161732, 6452165, 7742598, 10323464, 12904330, 15485196, 19356495, 20646928, 25808660, 30970392, 38712990, 51617320, 61940784, 77425980, 103234640, 154851960, 309703920.

If you add them up, you will get the total of 309,704,570. Now subtract 309,703,920 to get 650,378,976