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-module(e1).
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-export([e1/0]).
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sum_divisors(Max, Max, Acc) -> Acc;
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sum_divisors(Start, Max, Acc) when Start rem 3 == 0; Start rem 5 == 0 -> sum_divisors(Start+1, Max, Acc+Start);
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sum_divisors(Start, Max, Acc) -> sum_divisors(Start+1, Max, Acc).
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e1() -> sum_divisors(2, 1000, 0).
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