no of divisors of 1080 excluding throguhout divisors which are perfect squares?

• 12.
  The divisors are 1,2,3,5,6,15,10,8,27,40,135&1080.
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• 1080=2*2*2*5*3*3*3
  No. Of factors excluding square factors =3*2*3=18
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• ans is: 3
  factor of 1080=2*2*2*5*3*3*3
  Excluding square factor: 2,3,5.
  
  But I think @prayosha u also right....plzz any one correct us.
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