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    OlympiadMediumNumber Theory7–9

    How many positive divisors does 60 have?

    Quantos divisores positivos tem 60?

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    Solution

    60=22×3×560 = 2^{2} \times 3 \times 5. Divisors: (2+1)(1+1)(1+1)=12(2+1)(1+1)(1+1) = 12.