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- 196 is a composite number.
- Prime factorization: 196 = 2 × 2 × 7 × 7, which can be written 196 = 2² × 7²
- The exponents in the prime factorization are 2 and 2. Adding one to each and multiplying we get (2 + 1)(2 + 1) = 3 × 3 = 9. Therefore 196 has exactly 9 factors.
- Factors of 196: 1, 2, 4, 7, 14, 28, 49, 98, 196
- Factor pairs: 196 = 1 × 196, 2 × 98, 4 × 49, 7 × 28, or 14 × 14
- 196 is a perfect square. √196 = 14
Excel file of puzzles and previous week’s factor solutions: 10 Factors 2014-08-04
