Correct Answer: Option C
The sum of all the factors of am × bn is (a0 + a1 +......+ am) × (b0 + b1 +............+ bn)
Calculation:
Factors of 100 = 22 × 52
Sum of factors = (20 + 21 + 22) × (50 + 51 + 52)
⇒ (1 + 2 + 4) × (1 + 5 + 25)
⇒ 7 × 31
⇒ 217
∴ The sum of all factors of 100 is 217.
Download our app for free and access thousands of MCQ questions with detailed solutions