CUET Preparation Today
If $σ_k(n)$= Sum of kth powers of all the positive divisors of n, n ∈ N, the what is the value of $σ_4(3)$ ? |
86 84 82 80 |
82 |
The correct answer is option (3) : 82 $σ_4(3)$ Positive divisions of 4 are $1,3$ $∴σ_4(3)=1^4+3^4$ $=1+81= 82$ |
