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KCET2011MathematicsBinomial Theorem

The sum of all positive divisors of 242 except 1 and itself is

Options

  1. A156
  2. B242
  3. C342
  4. D399

Correct answer

A. 156

Step-by-step solution

The number is 242 . 242 - 2 11 11 (factors) The number of positive divisors except 1 and itself is =2,11,22,121 Sum of these numbers =2+11+22+121=156

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