Math Snap

STEP 1

1. The integer $m$ is divisible by $21$.
2. We need to determine other divisors of $m$ based on its divisibility by $21$.

STEP 2

1. Factorize 21.
2. Identify divisors of 21.
3. Conclude divisors of $m$.

STEP 3

Factorize $21$ into its prime factors.
$$21 = 3 \times 7$$

STEP 4

Identify all divisors of $21$ using its prime factorization.
The divisors of $21$ are $1, 3, 7,$ and $21$.

Conclude that if $21$ divides $m$, then all divisors of $21$ must also divide $m$.
Therefore, $m$ must be divisible by $1, 3, 7,$ and $21$.
The divisors of $m$ must include:
$$\boxed{1, 3, 7, \text{ and } 21}$$