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donjar

Selisih antarfaktor

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Cari $n \in \mathbb{N}$ terbesar sehingga untuk setiap $k \le \frac{n}{2}$ bilangan bulat positif terdapat dua faktor positif $n$ yang memiliki selisih $k$.


 


International Zhautykov Olympiad 2015, no. 4


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