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प्रश्न
A number for which the sum of all its factors is equal to twice the number is called a _____ number.
रिक्त स्थान भरें
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उत्तर
A number for which the sum of all its factors is equal to twice the number is called a perfect number.
Explanation:
Example: 6
Factors of 6 are 1, 2, 3 and 6.
Sum = 1 + 2 + 3 + 6 = 12 = 2 × 6 = Twice the number.
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