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Pronunciation Guide
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Listen to native speakers pronounce “perfect number” in real conversational contexts with synchronized timestamps and subtitles.
1, 2, and 3 divide into 6, and 1 plus 2 plus 3 equals 6.Next perfect number is 28 because 1, 2, 4, 7, and 14 divide into 28 and they add up to 28.You might think they're fairly common.