Among the following, amicable numbers are

Two numbers are said to be amicable numbers, if sum of divisors of one number excluding itself is equal to other number.

a) Sum of divisors of

     

Sum of divisors excluding

Sum of divisors of

Sum of divisors excluding284 = 220

So 220,284 are Amicable numbers

b) Sum of divisors of

Sum of divisors excluding

Sum of divisors of

Sum of divisors of excluding

  are Amicable numbers

c)

Sum of divisors of

=

Sum of divisors excluding

(Not getting other number)

So  are not amicable numbers