https://www.gregmat.com/quizzes/quiz/arithmetic-foundation-quiz-1-yhnf (Question 2)
No, 0 is not a factor of itself
Why 0 is Not a Factor of Itself
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Definition: A number \(a\) is a factor of \(b\) if you can divide \(b\) by \(a\) without leaving a remainder (\(b \div a = c\), where \(c\) is a whole number).
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The Problem: To check if 0 is a factor of 0, you must calculate \(0 \div 0\).