Is Golem an ERC-20?

Could you please elaborate on whether Golem, a decentralized network that aims to harness the computing power of idle hardware for various tasks, is built on the Ethereum blockchain as an ERC-20 token? ERC-20 is a technical standard used for smart contracts on the Ethereum blockchain that allows for the development of tokens with specific functionalities. Understanding this distinction is crucial for investors and developers alike, as it determines the compatibility and potential use cases of a given cryptocurrency. So, is Golem indeed an ERC-20 token, or does it operate on a different blockchain or protocol?