The greatest common factor is multiplied by the left, and the least common factor is multiplied by half a circle. For example, the greatest common factor of 100 and 350 is 10×5=50, and the smallest common multiple is 10×5×2×7=700. Tip: If two numbers are multiples, then the greatest common factor is a decimal and the smallest common multiple is a large number.

Common factor and common multiple formula:

* * * has a common factor and * * * has a common multiple.

Maximum number of common factors, mathematical symbol parentheses.

Minimum number in common multiple and brackets in mathematical symbols.

Find the greatest common factor, and decompose the decimal to find the greatest common factor.

Find the least common multiple, and expand a large number to find the least common multiple.

Find the greatest common factor divided by short, except that there is no common factor multiplied by one side.

Find the least common multiple, divided by short, divided by pairwise coprime multiplied by half a circle.

Definition:

Some multiples of several numbers are called common multiples of these numbers, and the least common multiple except 0 is called the least common multiple of these numbers.

The least common multiple of natural numbers A and B can be written as [a, b], and the greatest common factor of natural numbers A and B can be written as (a, b). When (a, b)= 1, = a×b b. If two numbers are multiples, their least common multiple is the larger number, and the least common multiple of two adjacent natural numbers is their product. The least common multiple = the product of two numbers/the maximum agreed (cause) number, and confusion with the maximum agreed (cause) number problem should be avoided when solving the problem.

Baidu encyclopedia-least common multiple