12 14
Factors come in pairs. It is only in the case of a square number that the two middle factors are equal and so are counted only once.
There are two pairs of even numbers that satisfy the condition. They are (8, 10) and (6, 12).
even numbers
Numbers called relatively prime have no common factors other than 1. All even numbers have 2 as a common factor, so no even number is relatively prime with any other even number. As an example, the factors of 14 are 1, 2, 7, and 14, and the factors of 15 are 1, 3, 5, and 15. 14 and 15 are relatively prime because the only factor they have in common is 1.
86 and 154 are not relatively prime because they are both even numbers. Relatively prime numbers have no common factors other than 1, and all even numbers have 2 as a common factor.
The factors of all numbers can be written in pairs. With square numbers, one of those pairs is the same number twice. When listed singly, square numbers have an odd number of factors. All others are even.
1 and 2 are common factors to even numbers
Even numbers.
You have to multiply something by something else to get a product. All numbers have factors in pairs.
No. All numbers have a common factor of 1, even if there are no others.
No. Odd numbers don't have even factors.
Factors come in pairs. It is only in the case of a square number that the two middle factors are equal and so are counted only once.
The GCF of any two odd numbers is always odd because odd numbers don't have any even factors. The GCF of any two even numbers is always even because even numbers are divisible by two and any common factors would have at least one two in common. The GCF of an even and an odd number is odd because odd numbers don't have any even factors.
yes because even numbers only go into 2 4 6.....
No. Odd numbers don't have even factors.
No. Two numbers are relatively prime if they have no prime factors in common. Two even numbers will have 2 as a prime factor in common.
A single number cannot have a highest common factor because "common" refers to factors that two or more numbers have in common. You have only one number.