Find out all the factors for the given algebraic expression: $5t^2$

Write down all the factors for the given algebraic expressions and find their H.C.F.:

$5s, 2s^2$

Write down all the factors for the given algebraic expressions and find their H.C.F.:

$9m^2, 3t$

Write down all the factors for the given algebraic expressions and find their H.C.F.:

$6a^2, 8ab$

Write down all the factors for the given algebraic expressions and find their H.C.F.:

$7m^2, 6m$

Find out the highest common factor for the following: $6m^{2}l, 12ml$