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

$156$

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$242$

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$342$

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$399$

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Solution

The correct option is A
$156$

Explanation for correct option:
The prime factors of $242$ are
$242 = 2 \times 11 \times 11$
Therefore the divisor of $242$ are $2, 11, 2 \times 11, 11 \times 11$ that is $2, 11, 22, 121,$
Therefor the sum of these number is
$= 2 + 11 + 22 + 121 = 156$
Hence, option A is correct .

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

The correct option is A 156Explanation for correct option:The prime factors of 242 are242=2×11×11Therefore the divisor of 242 are 2,11,2×11,11×11 that is 2,11,22,121,Therefor the sum of these number is=2+11+22+121=156Hence, option A is correct .

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