The greatest common factor of 8 and 15 is 1. The greatest common factor refers to the greatest divisor of two or more integers. The divisor of 8 is 1, 2,4,8, and the divisor of 15 is 1, 3,5, 15. So the greatest common divisor of 8 and 15 is 1.
The greatest common factor, also known as the greatest common factor, refers to the largest divisor of two or more integers * * *, and the concept corresponding to the greatest common factor is the least common multiple.