Q: What is the sum of all factors of the number 289,660 excluding 289,660?

 A: 405,860

Why is 405,860 the sum of all factors of 289,660, excluding 289,660?

The factors of the number 289,660 are: 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2069, 4138, 8276, 10345, 14483, 20690, 28966, 41380, 57932, 72415, 144830, 289660.

If you add them up, you will get the total of 290,065. Now subtract 289,660 to get 405,860


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