Yes. An even number will always have as it's factors, itself, 1, 2 and another number. So the minimum number of factors for an even number other than 2 is four.
1 and 2 are factors of all even numbers.
No, always odd. Since odd numbers don't have any even factors, they can't have any in common.
do you mean " what does all even numbers have as factors?"? then the number two.
Sum of even factors of a number will always equal an even number.
No. Perfect square numbers have an odd number of factors.
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.
When you multiply numbers together, the factors of the product are the factors of all of the multiplicands, and every even number includes at least one factor of 2.
All prime numbers have only 2 factors which are themselves and one. Al prime numbers are odd numbers except for 2 which is the only even prime number.
No. Odd numbers only have odd factors. They could not have an even factor in common.