Answers

2015-03-13T18:01:49+05:30
8 * 135 = 8 * 5 * 27 

=2^3 * 3^3 * 5 

Aliquot parts tells us that there are 4 * 4 * 2 = 32 factors. The ones that are perfect squared are: 

1, 2^2, 3^2, 2^2 * 3^2 

28 factors are not perfect squares.
Number of divisors = 4*4*2 = 32 
Number of square divisors = ([3/2]+1)([3/2]+1)([1/2]+1) = 4 
Difference = 28.
1 5 1
can u give me a clear explanation