Question
Find the Sum of all the even Factors of
‘240’Solution
Factors of 240 = 2 × 2 × 2 × 2 × 3 × 5 Sum of All factors = (2⁰ + 2¹ + 2² + 2³ + 2⁴) × (3⁰+ 3¹) × (5⁰+ 5¹) Sum of Even Factors = (2¹ + 2² + 2³ + 2⁴) × (3⁰ + 3¹) × (5⁰+ 5¹) = 30 × 4 × 6 = 720
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