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     EduGorilla 
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    F(n) is defined as the sum of all divisors of n (including 1 but not n itself). For example F(10) = 1 + 2 + 5 = 8. What is the value of F[F(12)]?

    Options :-

    1. 15
    2. 18
    3. 16
    4. 12
    5. 10
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