A reminder of the prime factorization of the New Year

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Let N N be the sum of the positive divisors of 2014 2014 . What is the number of positive divisors of N N ?


The answer is 40.

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1 solution

Ahaan Rungta
Jan 1, 2014

So, fun fact of the year. The prime factorization of 2014 2014 is 2 19 53 2 \cdot 19 \cdot 53 . Thus, the sum of the positive divisors of 2014 2014 is

( 1 + 2 ) ( 1 + 19 ) ( 1 + 53 ) = 3 20 54 = 2 3 3 4 5 , (1+2) \cdot (1+19) \cdot (1+53) = 3 \cdot 20 \cdot 54 = 2^3 \cdot 3^4 \cdot 5,

so the answer is 4 5 2 = 40 4 \cdot 5 \cdot 2 = \boxed {40} .

great solution...

Soyam Mohanty - 7 years, 4 months ago

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