Q: What is the sum of all factors of the number 420,189 excluding 420,189?

 A: 326,307

Why is 326,307 the sum of all factors of 420,189, excluding 420,189?

The factors of the number 420,189 are: 1, 3, 7, 11, 17, 21, 33, 51, 77, 107, 119, 187, 231, 321, 357, 561, 749, 1177, 1309, 1819, 2247, 3531, 3927, 5457, 8239, 12733, 20009, 24717, 38199, 60027, 140063, 420189.

If you add them up, you will get the total of 420,515. Now subtract 420,189 to get 326,307


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