Find the number of divisors of 1420.
  • 114
  • 215
  • 313
  • 412
Answer:- 1
Explanation:-

Solution:
1420 = 2 × 2 × 5 × 71 = (20 + 21 + 22) × (50 + 51) × (710 + 711);
Here, we count the number of terms in the expansion.
In the above expansion,
1420 contains number of terms = 3 × 2 × 2 = 12;
Then, the number of factors or divisors = 12.

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