What are the factors and prime factors of 80?

Answer 1

80 is a composite number because it has factors other than 1 and itself. It is not a Prime number.

The 10 factors of 80 are 1, 2, 4, 5, 8, 10, 16, 20, 40, and 80.

The factor pairs of 80 are 1 x 80, 2 x 40, 4 x 20, 5 x 16, and 8 x 10.

The proper factors of 80 are 1, 2, 4, 5, 8, 10, 16, 20, and 40 or,

if the definition you are using excludes 1, they are 2, 4, 5, 8, 10, 16, 20, and 40.

The prime factors of 80 are 2, 2, 2, 2, and 5.

Note: There is repetition of these factors, so if the prime factors are being listed instead of the prime factorization, usually only the distinct prime factors are listed.

The 2 distinct prime factors of 80 are 2 and 5.

The prime factorization of 80 is 2 x 2 x 2 x 2 x 5 or, in index form (in other words, using exponents), 24 x 5.

NOTE: There cannot be common factors, a greatest common factor, or a least common multiple of a single number because "common" refers to factors or multiples that two or more numbers have in common. and 7 is not a factor of 80