Q: What is the sum of all factors of the number 100,380 excluding 100,380?

A: 222,180

Why is 222,180 the sum of all factors of 100,380, excluding 100,380?

The factors of the number 100,380 are: 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 239, 420, 478, 717, 956, 1195, 1434, 1673, 2390, 2868, 3346, 3585, 4780, 5019, 6692, 7170, 8365, 10038, 14340, 16730, 20076, 25095, 33460, 50190, 100380.

If you add them up, you will get the total of 100,602. Now subtract 100,380 to get 222,180