public static List<SimpleEntry<Integer, Integer>> primeFactorsMult(int number) {
        return P10.encode(P32.primeFactors(number))
                .stream()
                .map(e -> new SimpleEntry<>(e.getValue(), e.getKey()))
                .collect(toList());
    }
(**) Determine the prime factors of a given positive integer (2)
java8/src/main/java/com/shekhargulati/ninetynine_problems/_02_arithmetic/P33.java