Factor the expressions: 1.1 3a2b3 and 4a3b2

Step 1: Find the factors for each expression in 1.1.
To find all possible factors, we list the prime factors for the numerical coefficients and the individual variable factors for the algebraic parts.

For $3a^2b^3$:
The prime factors of 3 are 3.
The factors of $a^2$ are $a, a$.
The factors of $b^3$ are $b, b, b$.
So, the factors are $3, a, a, b, b, b$.

For $4a^3b^2$:
The prime factors of 4 are $2, 2$.
The factors of $a^3$ are $a, a, a$.
The factors