1. The problem is to explain the number 20 with fewer steps. 2. We can express 20 as a product of its prime factors: $$20 = 2 \times 10$$. 3. Then, factor 10 into primes: $$10 = 2 \times 5$$. 4. So, the prime factorization of 20 is $$20 = 2 \times 2 \times 5 = 2^2 \times 5$$. 5. This is the simplest way to explain 20 using prime factors in minimal steps.