To find all the divisors of the number 272,727:
- 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 272,727:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
272,727 = 34 × 7 × 13 × 37
272,727 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 = (4 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 5 × 2 × 2 × 2 = 40
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 272,727
- Multiply the prime factors involved in the prime factorization of the number in all their unique combinations, that give different results.
- Also consider the exponents of these prime factors.
- 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 =
3
prime factor =
7
composite factor = 3
2 =
9
prime factor =
13
composite factor = 3 × 7 =
21
composite factor = 3
3 =
27
prime factor =
37
composite factor = 3 × 13 =
39
composite factor = 3
2 × 7 =
63
composite factor = 3
4 =
81
composite factor = 7 × 13 =
91
composite factor = 3 × 37 =
111
composite factor = 3
2 × 13 =
117
composite factor = 3
3 × 7 =
189
composite factor = 7 × 37 =
259
composite factor = 3 × 7 × 13 =
273
composite factor = 3
2 × 37 =
333
composite factor = 3
3 × 13 =
351
composite factor = 13 × 37 =
481
This list continues below...
... This list continues from above
composite factor = 3
4 × 7 =
567
composite factor = 3 × 7 × 37 =
777
composite factor = 3
2 × 7 × 13 =
819
composite factor = 3
3 × 37 =
999
composite factor = 3
4 × 13 =
1,053
composite factor = 3 × 13 × 37 =
1,443
composite factor = 3
2 × 7 × 37 =
2,331
composite factor = 3
3 × 7 × 13 =
2,457
composite factor = 3
4 × 37 =
2,997
composite factor = 7 × 13 × 37 =
3,367
composite factor = 3
2 × 13 × 37 =
4,329
composite factor = 3
3 × 7 × 37 =
6,993
composite factor = 3
4 × 7 × 13 =
7,371
composite factor = 3 × 7 × 13 × 37 =
10,101
composite factor = 3
3 × 13 × 37 =
12,987
composite factor = 3
4 × 7 × 37 =
20,979
composite factor = 3
2 × 7 × 13 × 37 =
30,303
composite factor = 3
4 × 13 × 37 =
38,961
composite factor = 3
3 × 7 × 13 × 37 =
90,909
composite factor = 3
4 × 7 × 13 × 37 =
272,727
40 factors (divisors)
What times what is 272,727?
What number multiplied by what number equals 272,727?
All the combinations of any two natural numbers whose product equals 272,727.
1 × 272,727 = 272,727
3 × 90,909 = 272,727
7 × 38,961 = 272,727
9 × 30,303 = 272,727
13 × 20,979 = 272,727
21 × 12,987 = 272,727
27 × 10,101 = 272,727
37 × 7,371 = 272,727
39 × 6,993 = 272,727
63 × 4,329 = 272,727
81 × 3,367 = 272,727
91 × 2,997 = 272,727
111 × 2,457 = 272,727
117 × 2,331 = 272,727
189 × 1,443 = 272,727
259 × 1,053 = 272,727
273 × 999 = 272,727
333 × 819 = 272,727
351 × 777 = 272,727
481 × 567 = 272,727
20 unique multiplications The final answer:
(scroll down)