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2 and 3 power sum (Posted on 2024-07-22) Difficulty: 3 of 5
What is the sum of all the exact divisors of the number N=1988-1 that are of the form 2a*3b, where a and b are greater than zero?

No Solution Yet Submitted by Danish Ahmed Khan    
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Puzzle Thoughts | Comment 1 of 3
The required sum is:
(2^5+2^4+2^3+2^2+2)(3^2+3)= 744

Edited on July 22, 2024, 8:31 am
  Posted by K Sengupta on 2024-07-22 08:30:44

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