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# help

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The product of the proper positive integer factors of \(n\) can be written as \(n^{(ax+b)/c}\), where \(x\) is the number of positive divisors has, \(c\) is a positive integer, and the greatest common factor of the three integers \(a\), \(b\), and \(c\) is 1. What is \(a+b+c\)?

Feb 12, 2019

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Here is one scenario that seems to work:
Divisors of 24 =(1, 2, 3, 4, 6, 8, 12, 24) =8 divisors.
proper product =(1, 2, 3, 4, 6, 8, 12)=13,824. Notice that I did not include 24 itself.
24^3 =13,824=24^(8*1 + 10) / 6, where:
x=8, a =1, b=10 and c=6.
GCD{1, 6, 10} = 1
a + b + c =1 + 10 + 6 = 17
Note: Also it seems to work for 60:

Divisors of 60 =(1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60) = 12

Proper product( (1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30) =777,600,000. Notice again I did include 60 itself.

60^5 =777,600,000 =60^(12*1 + 13) / 5, where:

x =12, a = 1, b = 13, and c =5

GCD, or GCF[1, 5, 13] = 1

a + b + c =1 + 13 + 5 = 19.

P.S. I believe there are infinite solutions to your question.

Feb 12, 2019
edited by Guest  Feb 12, 2019