12. For a natural number $n$, if there exist non-zero natural numbers $a$ and $b$ such that $n=a+b+a \times b$, then $n$ is called a "good number". For example, $3=1+1+1 \times 1$, so 3 is a "good number". Among the 100 natural numbers from 1 to 100, there are $\qquad$ "good numbers".
Answer: 74