Where does this definition of perfect number come from?
This entry for perfect number is sourced from GetWord Corpus, one of the dictionaries and corpora merged into Lughet.
Does perfect number appear elsewhere on Lughet?
Yes — perfect number appears under other sources or language pairs in Lughet's collection. See the list below.
What is Lughet?
Lughet is a free trilingual dictionary covering nearly five million entries across Uyghur, Chinese, and English, drawn from more than ten source dictionaries and corpora.