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https://ko.numberempire.com/numberfactorizer.php

https://www.allmath.com/ko/prime-factorization-calculator.php

https://www.emathhelp.net/ko/calculators/pre-algebra/prime-factorization-calculator/

https://math.zxcvber.com/util/primefact.html

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https://www.mathgptpro.com/ko/app/calculator/factor