Ernakulam Additional Sessions Judge P G Ajith awarded the sentences while delivering the judgement in two cases related to the sensational Paravoor sex scam that came to light in 2011.
The girl's father Sudheer, a small time actor, had earlier been sentenced to life in another case related to the scam.
Omana, an alleged sex racket agent, was acquitted for want of evidence in the two cases.
Over 50 cases had been registered for rape and gang rape of the girl when she was a minor.
Also Read
The girl was forced into flesh trade by her father. Sudheer had himself raped her and taken her to various persons in different places where she was sexually exploited.
The victim was taken to various places and raped promising roles in films in 2010.
There are 148 accused in the cases and 100 persons have so far been arrested.
The case came to light in 2011 and shook the conscience of people of Kerala.