Where does “Lernerfaktor” come from?

Lernerfaktor (German) comes from German Faktor, from Latin factor, from Latin faciō, from Latin -torium, from Latin -tōrius, from Latin -tor, from Proto-Italic -tōr, from Proto-Indo-European -tōr.

Ancestry of “Lernerfaktor”, step by step

Lernerfaktor traces back through two separate lines of ancestry.

via German Faktor

StepLanguageWordMeaning
1GermanFaktorfactor
2LatinfactorOne who or which does or makes something; doer,...
3Latinfaciōto do
4Latin-toriumnominative neuter singular of -tōrius; accusative...
5Latin-tōriusory
6Latin-tor-er
7Proto-Italic-tōrForms agent nouns to verb stems
8Proto-Indo-European-tōrDerives agent nouns from verbs, denoting someone...
9Proto-Indo-European-tor-s

via German Lerner

StepLanguageWordMeaning
1GermanLernerlearner (usually of a language) male or of unspecified gender
2German-erForms agent nouns etc. from verbs, suffixed to...
3Old High German-āriused to form agent nouns
4Proto-West Germanic-ārī-er
5Proto-Germanic-ārijaz-er
6Latin-āriuser
7Proto-Italic*-āziosForms relational adjectives to nouns (and rarely numerals)
Every word from Proto-Indo-European -tor-sEvery word from Latin -toriumEvery word from Latin -tor