1648 is a composite number because it has factors other than 1 and itself. It is not a Prime number.
To cover all the different types of "factors":
The 10 factors of 1648 are 1, 2, 4, 8, 16, 103, 206, 412, 824, and 1648.
The factor pairs of 1648 are 1 x 1648, 2 x 824, 4 x 412, 8 x 206, and 16 x 103.
The proper factors of 1648 are 1, 2, 4, 8, 16, 103, 206, 412 and 824 or,
if the definition you are using excludes 1, they are 2, 4, 8, 16, 103, 206, 412 and 824.
The prime factors of 1648 are 2, 2, 2, 2, and 103.
Note: There is repetition of these factors, so if the prime factors are being listed instead of the prime factorization, usually only the distinct prime factors are listed.
The 2 distinct prime factors (listing each prime factor only once) of 1648 are 2 and 103.
The prime factorization of 1648 is 2 x 2 x 2 x 2 x 103 or, in index form (in other words, using exponents), 24 x 103
NOTE: There cannot be common factors, a greatest common factor, or a least common multiple of a single number because "common" refers to factors or multiples that two or more numbers have in common.
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factors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 29, 30, 58, 60, 87, 116, 145, 174, 290, 348, 435, 580, 870, 1740
prime factors: 2(2), 3, 5, 29
Prime factors are factors that are also prime numbers.
The prime factors are: 2,2699
The prime factors of 904 are: 2, 113
As a product of its prime factors: 5*109 = 545
factors: 1, 59, 3481 prime factors: 59(2)