Ma'anar ƙamus na kalmar "factorization" shine tsari na rushe lamba, magana, ko daidaitawa zuwa ƙananan sassa ko dalilai. A cikin ilimin lissafi, ƙididdigewa ya ƙunshi nemo mahimman abubuwan lamba ko wargaza magana ko daidaitawa cikin sassan sa. Ƙirƙirar ƙira wani muhimmin ra'ayi ne a fagage daban-daban na lissafi, gami da algebra, ka'idar lamba, da ƙididdiga, kuma yana da aikace-aikace masu yawa a cikin warware matsalolin duniya na ainihi, gami da cryptography, ka'idar coding, da nazarin bayanai.