If California is anything like Illinois and Utah, the state issued certificate of divorce can be ordered with the Apostille.
I believe a notary in the US only notarizes documents signed in their presence.
If the divorce papers from the court aren't notarized or have a raised (embosed) seal they may not be able to receive the Apostille and would not be accepted in Argentina.
Official Secretary of State issued documents with the Apostille are (provided the name on the document matches the name on your passport, DNI, birth certificate, etc.). I think this is the best option if it is available.