Question 33209
one method is to find all prime factors one by one 
2|67392
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2|33696
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2|16848
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2|8424
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2|4212
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2|2106
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3|1053
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3|351
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3|117
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3|39
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..13
hence 67392=2^6*3^4*13...now take 2 combinations so that they make 2 threedigit numbers
like 2^5*13=32*13=416 and
2*3^4=2*81=162