The factors of 15 are: 1, 3, 5, 15
The factors of 40 are: 1, 2, 4, 5, 8, 10, 20, 40
The common factors are: 1, 5
The highest common is 2
Highest common factor is 7.
The Highest Common Factor is: 9
The Highest Common Factor is: 4
The highest common factor is 7.
The highest common factor is 7.
The highest common factor is 35.
The highest common factor is: 20
99 and 165's highest common factor is 33.
7The highest common factor is 7
The highest common factor (HCF) is 12.
The highest common factor is 3.