KCET · Maths · Binomial Theorem
The sum of all positive divisors of 242 except 1 and itself is
- A 156
- B 242
- C 342
- D 399
Answer & Solution
Correct Answer
(A) 156
Step-by-step Solution
Detailed explanation
The number is 242 .
\[
242 \text { - } 2 \times 11 \times 11 \text { (factors) }
\]
The number of positive divisors except 1 and itself is \(=2,11,22,121\)
Sum of these numbers
\[
=2+11+22+121=156
\]
\[
242 \text { - } 2 \times 11 \times 11 \text { (factors) }
\]
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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