Q: What is the sum of all factors of the number 427,980 excluding 427,980?

A: 942,900

Why is 942,900 the sum of all factors of 427,980, excluding 427,980?

The factors of the number 427,980 are: 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 1019, 2038, 3057, 4076, 5095, 6114, 7133, 10190, 12228, 14266, 15285, 20380, 21399, 28532, 30570, 35665, 42798, 61140, 71330, 85596, 106995, 142660, 213990, 427980.

If you add them up, you will get the total of 428,922. Now subtract 427,980 to get 942,900