To find all the divisors of the number 153,714:
- 1. Decompose the number into prime factors.
- See how you can find out how many factors (divisors) the number has, without actually calculating them.
- 2. Multiply the prime factors in all their unique combinations, that yield different results.
1. Carry out the prime factorization of the number 153,714:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
153,714 = 2 × 3 × 11 × 17 × 137
153,714 is not a prime number but a composite one.
- Prime number: a natural number that is divisible (divided evenly) only by 1 and itself. A prime number has exactly two factors: 1 and the number itself.
- Examples of prime numbers: 2 (factors 1, 2), 3 (factors 1, 3), 5 (factors 1, 5), 7 (factors 1, 7), 11 (factors 1, 11), 13 (factors 1, 13), ...
- Composite number: a natural number that has at least one factor other than 1 and itself. So it is neither a prime number nor 1.
- Examples of composite numbers: 4 (it has 3 factors: 1, 2, 4), 6 (it has 4 factors: 1, 2, 3, 6), 8 (it has 4 factors: 1, 2, 4, 8), 9 (it has 3 factors: 1, 3, 9), 10 (it has 4 factors: 1, 2, 5, 10), 12 (it has 6 factors: 1, 2, 3, 4, 6, 12), ...
How to count the number of factors of a number?
Without actually finding the factors
- If a number N is prime factorized as:
N = am × bk × cz
where a, b, c are the prime factors and m, k, z are their exponents, natural numbers, .... - ...
- Then the number of factors of the number N can be calculated as:
n = (m + 1) × (k + 1) × (z + 1) - ...
- In our case, the number of factors is calculated as:
- n = (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 2 × 2 × 2 × 2 × 2 = 32
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 153,714
- Multiply the prime factors involved in the prime factorization of the number in all their unique combinations, that give different results.
- Also add 1 to the list of factors (divisors). All the numbers are divisible by 1.
All the factors (divisors) are listed below - in ascending order
The list of factors (divisors):
Numbers other than 1 that are not prime factors are composite factors (divisors).
neither prime nor composite =
1
prime factor =
2
prime factor =
3
composite factor = 2 × 3 =
6
prime factor =
11
prime factor =
17
composite factor = 2 × 11 =
22
composite factor = 3 × 11 =
33
composite factor = 2 × 17 =
34
composite factor = 3 × 17 =
51
composite factor = 2 × 3 × 11 =
66
composite factor = 2 × 3 × 17 =
102
prime factor =
137
composite factor = 11 × 17 =
187
composite factor = 2 × 137 =
274
composite factor = 2 × 11 × 17 =
374
This list continues below...
... This list continues from above
composite factor = 3 × 137 =
411
composite factor = 3 × 11 × 17 =
561
composite factor = 2 × 3 × 137 =
822
composite factor = 2 × 3 × 11 × 17 =
1,122
composite factor = 11 × 137 =
1,507
composite factor = 17 × 137 =
2,329
composite factor = 2 × 11 × 137 =
3,014
composite factor = 3 × 11 × 137 =
4,521
composite factor = 2 × 17 × 137 =
4,658
composite factor = 3 × 17 × 137 =
6,987
composite factor = 2 × 3 × 11 × 137 =
9,042
composite factor = 2 × 3 × 17 × 137 =
13,974
composite factor = 11 × 17 × 137 =
25,619
composite factor = 2 × 11 × 17 × 137 =
51,238
composite factor = 3 × 11 × 17 × 137 =
76,857
composite factor = 2 × 3 × 11 × 17 × 137 =
153,714
32 factors (divisors)
What times what is 153,714?
What number multiplied by what number equals 153,714?
All the combinations of any two natural numbers whose product equals 153,714.
1 × 153,714 = 153,714
2 × 76,857 = 153,714
3 × 51,238 = 153,714
6 × 25,619 = 153,714
11 × 13,974 = 153,714
17 × 9,042 = 153,714
22 × 6,987 = 153,714
33 × 4,658 = 153,714
34 × 4,521 = 153,714
51 × 3,014 = 153,714
66 × 2,329 = 153,714
102 × 1,507 = 153,714
137 × 1,122 = 153,714
187 × 822 = 153,714
274 × 561 = 153,714
374 × 411 = 153,714
16 unique multiplications The final answer:
(scroll down)