Prime factors are 2, 2, 2, 3, 5, 7
Other factors are combinations of the primes, i.e.
2 x 2 = 4
2 x 3 = 6
2 x 2 x 2 = 8
2 x 5 = 10
2 x 2 x 3 = 12
2 x 7 = 14
3 x 5 = 15
2 x 2 x 5 = 20
3 x 7 = 21
2 x 2 x 2 x 3 = 24
2 x 2 x 7 = 28
2 x 3 x 5 = 30
5 x 7 = 35
2 x 2 x 2 x 5 = 40
2 x 3 x 7 = 42
2 x 2 x 2 x 7 = 56
2 x 2 x 3 x 5 = 60
2 x 5 x 7 = 70
2 x 2 x 3 x 7 = 84
3 x 5 x 7 = 105
2 x 2 x 2 x 3 x 5 = 120
2 x 2 x 5 x 7 = 140
2 x 2 x 2 x 3 x 7 = 168
2 x 3 x 5 x 7 = 210
2 x 2 x 2 x 5 x 7 = 280
2 x 2 x 3 x 5 x 7 = 420
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2 x 2 x 210
4 x 2 x 105
8 x 3 x 35
24 x 5 x 7
56 x 3 x 5
60 x 2 x 7
6 x 10 x 14
3 x 10 x 28
5 x 21 x 8
7 x 10 x 12
10 x 21 x 4
and many more
To find the factors of 840, divide 840 by all numbers less than the square root of 840 that do not leave a remainder. This process gives factor pairs consisting of the divisor and the quotient.
840/1 = 840; factor pair is 1 and 840
840/2 = 420; factor pair is 2 and 420
840/3 = 280; factor pair is 3 and 280
840/4 = 210; factor pair is 4 and 210
840/5 = 168; factor pair is 5 and 168
840/6 = 140; factor pair is 6 and 140
840/7 = 120; factor pair is 7 and 120
840/8 = 105; factor pair is 8 and 105
840/10 = 84; factor pair is 10 and 84
840/12 = 70; factor pair is 12 and 70
840/14 = 60; factor pair is 14 and 60
840/15 = 56; factor pair is 15 and 56
840/20 = 42; factor pair is 20 and 42
840/21 = 40; factor pair is 21 and 40
840/24 = 35; factor pair is 24 and 35
840/28 = 30; factor pair is 28 and 30
The factor pairs can then be arranged in ascending numerical order.
The factors of 840 are 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, and 840.
The GCF is 40. The LCM is 6720. The GCD is infinite.
840- 2 2 2 5 7 3840- 2 3rd power, *5*7*3840- 2*2*2*5*7*3
35 can be a factor, but it is not prime.
There is no factorization. 37 is a prime number.37 is already prime. Its only prime factor is itself.
81 is not prime. Its prime factorization is 3x3x3x3.