Find the LCM of the following. Leave the answers as prime factors.

Unique prime factors are 2, 3, and 5.
Highest power of 2: $2^2$ (from $N_1$ and $N_3$)
Highest power of 3: $3^2$ (from $N_2$)
Highest power of 5: $5^1$ (from $N_2$ and $N_3$)

The LCM for part a is $\boxed{2^2 \times 3^2 \times 5}$.

Unique prime factors are 2, 3, and 5.
Highest power of 2: $2^3$ (from $N_2$)
Highest power of 3: $3^2$ (from $N_1$)
Highest power of 5: $5^1$ (from $N_3$)

The LCM for part b is $\boxed{2^3 \times 3^2 \times 5}$.

Unique prime factors are 2, 3, and 5.
Highest power of 2: $2^4$ (from $N_1$)
Highest power of 3: $3^2$ (from $N_3$)
Highest power of 5: $5^2$ (from $N_2$)

The LCM for part c is $\boxed{2^4 \times 3^2 \times 5^2}$.

Unique prime factors are 2, 3, 5, and 7.
Highest power of 2: $2^1$ (from $N_2$ and $N_3$)
Highest power of 3: $3^2$ (from $N_1$)
Highest power of 5: $5^2$ (from $N_2$)
Highest power of 7: $7^1$ (from $N_2$, $N_3$, and $N_4$)

The LCM for part d is $\boxed{2 \times 3^2 \times 5^2 \times 7}$.

Unique prime factors are 2, 3, 5, and 7.
Highest power of 2: $2^1$ (from $N_1$ and $N_3$)
Highest power of 3: $3^3$ (from $N_3$)
Highest power of 5: $5^2$ (from $N_4$)
Highest power of 7: $7^1$ (from $N_2$ and $N_4$)

The LCM for part e is $\boxed{2 \times 3^3 \times 5^2 \times 7}$.