20 lines
284 B
Ruby
20 lines
284 B
Ruby
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MAX = 10000
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def d(num)
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sum = 0
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1.upto(num-1) do |d|
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if(num % d == 0)
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sum += d
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end
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end
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return sum
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end
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result = 0
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Range.new(0,MAX,true).each do |number|
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d_sum = d(number)
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if(number != d_sum && number == d(d_sum))
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result += number
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end
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end
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puts result
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