#include <iostream>
#include <optional>
#include <vector>

std::optional<std::vector<int>> k_factorize(int number, int k) {
    int divisor = 2;
    std::vector<int> factorization;
    while (divisor * divisor <= number && factorization.size() + 1 < k) {
        if (number % divisor == 0) {
            number /= divisor;
            factorization.push_back(divisor);
        } else {
            divisor += 1;
        }
        if (number == 1) {
            return std::nullopt;
        }
    }
    factorization.push_back(number);
    if (factorization.size() == k) {
        return factorization;
    }
    return std::nullopt;
}

int main() {
    int number, k;
    std::cin >> number >> k;
    auto factorization = k_factorize(number, k);
    if (factorization) {
        for (auto factor: factorization.value()) {
            std::cout << factor << " ";
        }
    } else {
        std::cout << -1;
    }
    return 0;
}