My number is a factor of 630.
My number is a multiple of 21.
The digits of my number equal a factor of 36.
My number is less than 301.
My number is a factor of 630.
My number is a multiple of 21.
The digits of my number equal a factor of 36.
My number is less than 301.
The answer is 42.
Why? Think about it.
The answer is 105.
Ding Ding Ding!