To solve the problem, we follow these steps:

Step 1: Prime Factorization of 2023

2023 = (7^1 \times 17^2) (since (7×17×17 = 2023)).

Step 2: Calculate Sum of Divrs ((\sigma(n)))

The sum of divrs formula for (n = p^a q^b) is:
(\sigma(n) = (1+p+...+p^a) × (1+q+...+q^b))

For 2023:
(\sigma(7^1) = 1+7 = 8)
(\sigma(17^2) =1+17+17^2 =1+17+289=307)

Total sum: (8×307=2456)

Step3: Count 1s in Binary of 2456

Binary representation of 2456 is 100110011000.

Number of 1s: 5 (positions 11,8,7,4,3).

Answer:5

(\boxed{5})

作者声明:本文包含人工智能生成内容。