Q: What is the sum of all factors of the number 300,123,400 excluding 300,123,400?

A: 420,187,640

Why is 420,187,640 the sum of all factors of 300,123,400, excluding 300,123,400?

The factors of the number 300,123,400 are: 1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 155, 200, 248, 310, 620, 775, 1240, 1550, 3100, 6200, 48407, 96814, 193628, 242035, 387256, 484070, 968140, 1210175, 1500617, 1936280, 2420350, 3001234, 4840700, 6002468, 7503085, 9681400, 12004936, 15006170, 30012340, 37515425, 60024680, 75030850, 150061700, 300123400.

If you add them up, you will get the total of 300,123,820. Now subtract 300,123,400 to get 420,187,640