【Question 13】The smallest natural number that can be evenly divided by all natural numbers from 1 to 11 is
Analysis: The prime numbers included after the prime factorization of the numbers from 1 to 11 are $2, 3, 5, 7, 11$, so this natural number must include the prime factors $2, 3, 5, 7, 11$.
$$
1=1^{1}, 2=2^{1}, 3=3^{1}, 4=2^{2}, 5=5^{1}, 6=2 \times 3,7=7^{1}, 8=2^{3}, 9=3^{2}, 10=2 \times 5,11=11^{1}
$$

Therefore, the smallest natural number is $2^{3} \times 3^{2} \times 5^{1} \times 7^{1} \times 11^{1}=27720$