Q: What is the sum of all factors of the number 20,640,225 excluding 20,640,225?

 A: 13,732,575

Why is 13,732,575 the sum of all factors of 20,640,225, excluding 20,640,225?

The factors of the number 20,640,225 are: 1, 3, 5, 15, 25, 75, 149, 447, 745, 1847, 2235, 3725, 5541, 9235, 11175, 27705, 46175, 138525, 275203, 825609, 1376015, 4128045, 6880075, 20640225.

If you add them up, you will get the total of 20,640,238. Now subtract 20,640,225 to get 13,732,575


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