The Pythagoreans
The name for the followers of Pythagoras was the Pythagoreans.
Pythagoreans
Pythagoras' followers were known as Pythagoreans or Pythagoreans. They were a group of individuals who embraced his teachings on mathematics, philosophy, and way of life.
the Pythagoreans
He studied at many schools with his followers and Pythagoras the mathematician from around 300BC was his main influence.
Well, Pythagoras being a person, would have to have been made by another two persons. Unless you're referring to Pythagoras's theorem, in which I'd have to say Pythagoras. His theory was later proved by one of his followers.
He was simply known as Pythagoras of Samos.
Pythagoras of Samos
His only name in historical record is Pythagoras, he is sometimes called Pythagoras of Samos
Pythagoras
Pythagoras.
His full name was simply "Pythagoras."