Simply put, it is an integer greater than or equal to zero.
Score: divide the unit 1 into several parts on average, and take some of them.
Integer: We call positive integers, 0 and negative integers integers.
Positive number: a number greater than 0.
Negative number: a number less than 0.
Greatest common divisor: The greatest common factor of these numbers
Least common multiple: the smallest multiple of these numbers * * *