The woman, a resident of Mamura area, alleged that Aakash and Anil forcibly took her to an office property in Sector 63 on a motorbike last night, and there they raped her.
Aakash has been arrested and police officials were looking out for Anil, who has been absconding since the incident, the police said.
A medical examination of the woman was being conducted.
In another incident, a 10-year-old girl was allegedly molested by a man, identified as Sandeep, in Sector 49.