Thus, each the first 9 factors in (i) are divisible by 2, and no higher power of 2 divides these factors.

For the two remaining factors, we observe that the highest power of 2 dividing (2007-1) = 2006 is 1 and the highest power of 2 dividing (2007+1) = 2008 is 3.

Consequently, the required maximum value of maximum value of G is: (9+1+3) = 13.

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