Home›Divisor function›笛卡爾數🌐中文EnglishDeutschEspañolFrançaisPortuguêsSvenska中文日本語EntityQ15402251· pop 8· linked from 227 articles笛卡爾數odd number which would have been a perfect number if one of its composite factors were primeAvailable in 8 languagesEspañolFrançaisDeutsch中文SlovenianSvenskaTamilvia Wikidata sitelinks · CC0Connectionsprime numberEntityperfect numberEntityCategoriesDivisor functionInteger sequences