Q: What is the sum of all factors of the number 421,770 excluding 421,770?

 A: 651,318

Why is 651,318 the sum of all factors of 421,770, excluding 421,770?

The factors of the number 421,770 are: 1, 2, 3, 5, 6, 10, 15, 17, 30, 34, 51, 85, 102, 170, 255, 510, 827, 1654, 2481, 4135, 4962, 8270, 12405, 14059, 24810, 28118, 42177, 70295, 84354, 140590, 210885, 421770.

If you add them up, you will get the total of 422,421. Now subtract 421,770 to get 651,318


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