Q: What is the sum of all factors of the number 425,220 excluding 425,220?

A: 831,420

Why is 831,420 the sum of all factors of 425,220, excluding 425,220?

The factors of the number 425,220 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 373, 380, 570, 746, 1119, 1140, 1492, 1865, 2238, 3730, 4476, 5595, 7087, 7460, 11190, 14174, 21261, 22380, 28348, 35435, 42522, 70870, 85044, 106305, 141740, 212610, 425220.

If you add them up, you will get the total of 426,051. Now subtract 425,220 to get 831,420