Answer
Factors: $1, 2, 4, 5, 8, 10, 16, 20, 40$ and $80$
Work Step by Step
Begin with the number $1$.
Divide $80$ by $1$. The result is $80$.
$80=1\cdot 80$
$1$ and $80$ are factors of $80$
.
Divide $80$ by $2$. The result is $40$.
$80=2\cdot 40$
$2$ and $40$ are additional factors of $80$.
Divide $80$ by $3$. The result is $26.67$ (not a whole number).
$3$ does not divide evenly into $80$.
Divide $80$ by $4$. The result is $20$.
$80=4\cdot 20$
$4$ and $20$ are more factors of $80$.
Divide $80$ by $5$. The result is $16$.
$80=5\cdot 16$
$5$ and $16$ are additional factors of $80$.
Divide $80$ by $6$. The result is $13.33$ (not a whole number).
$6$ does not divide evenly into $80$.
Divide $80$ by $7$. The result is $11.43$ (not a whole number).
$7$ does not divide evenly into $80$.
Divide $80$ by $8$. The result is $10$.
$80=8\cdot 10$
$8$ and $10$ are more factors of $80$.
Finally, divide $80$ by $9$, which equals $8.89$ (not a whole number).
$9$ does not divide evenly into $80$.
Thus, the factors of $80$ are $1, 2, 4, 5, 8, 10, 16, 20, 40$ and $80$.
