Good Numbers

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A number is called a square free number if there does not exist a number greater than 1, whose square divides the number evenly/perfectly. For example, number 8 is not a square free number as number 4 (which is square of 2), divides 8. Similarly, number 4 is also not a square free number. However numbers 1, 3, 6 all are square free numbers. A number n is called a good number if following properti

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