The number of distinct positive integral factors of 2014 is…

2014

The number of distinct positive integral factors of 2014 is _________________________ .

Attempted by 101 students.

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Correct answer: 8

Step 1: Prime factorize 2014.

2014 = 2 × 1007 = 2 × 19 × 53, so the prime factorization is 2¹ × 19¹ × 53¹.

Step 2: Use the divisor-count formula. If n = pa x qb x rc …, the number of positive divisors is (a+1)(b+1)(c+1)…

Here the exponents are 1, 1, and 1, so the number of positive divisors is (1+1)(1+1)(1+1) = 2 × 2 × 2 = 8.

All positive divisors are:

  • 1

  • 2

  • 19

  • 38

  • 53

  • 106

  • 1007

  • 2014

Therefore, the number of distinct positive integral factors of 2014 is 8.

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