43 is already prime; no factorization required.
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1 and 241. 241 is a prime number.
1, 7, 49, 343.
There is no prime factorization for 23; it is a prime number.
All these go into 4,802 evenly: 1, 2, 7, 14, 49, 98, 343, 686, 2401, 4802.
The least common multiple (LCM) of two numbers is the smallest number that is a multiple of both numbers. In this case, the prime factorization of 49 is 7^2 and the prime factorization of 343 is 7^3. The LCM is found by taking the highest power of each prime factor that appears in either number, so the LCM of 49 and 343 is 7^3, which equals 343.