Sumant.xD

Results 3 issues of Sumant.xD

No of divisors of all numbers from 1 to n using sieve

good first issue
hackoctoberfest accepted
HackOctober
HackOctober 2022
HackOctober Fest
Hacktoberfest 2022
Hacktoberfest Accepted
hacktoberfest-accepted

changed openai embedder from chromadb to langchain #1455

this pr fixes the issue with #1455