Q: What is the sum of all factors of the number 2,143,220 excluding 2,143,220?

 A: 2,406,388

Why is 2,406,388 the sum of all factors of 2,143,220, excluding 2,143,220?

The factors of the number 2,143,220 are: 1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 1061, 2020, 2122, 4244, 5305, 10610, 21220, 107161, 214322, 428644, 535805, 1071610, 2143220.

If you add them up, you will get the total of 2,143,222. Now subtract 2,143,220 to get 2,406,388


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