To find all the divisors of the number 272,664:
- 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 272,664:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
272,664 = 23 × 32 × 7 × 541
272,664 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 = (3 + 1) × (2 + 1) × (1 + 1) × (1 + 1) = 4 × 3 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 272,664
- 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 =
2
prime factor =
3
composite factor = 2
2 =
4
composite factor = 2 × 3 =
6
prime factor =
7
composite factor = 2
3 =
8
composite factor = 3
2 =
9
composite factor = 2
2 × 3 =
12
composite factor = 2 × 7 =
14
composite factor = 2 × 3
2 =
18
composite factor = 3 × 7 =
21
composite factor = 2
3 × 3 =
24
composite factor = 2
2 × 7 =
28
composite factor = 2
2 × 3
2 =
36
composite factor = 2 × 3 × 7 =
42
composite factor = 2
3 × 7 =
56
composite factor = 3
2 × 7 =
63
composite factor = 2
3 × 3
2 =
72
composite factor = 2
2 × 3 × 7 =
84
composite factor = 2 × 3
2 × 7 =
126
composite factor = 2
3 × 3 × 7 =
168
composite factor = 2
2 × 3
2 × 7 =
252
composite factor = 2
3 × 3
2 × 7 =
504
This list continues below...
... This list continues from above
prime factor =
541
composite factor = 2 × 541 =
1,082
composite factor = 3 × 541 =
1,623
composite factor = 2
2 × 541 =
2,164
composite factor = 2 × 3 × 541 =
3,246
composite factor = 7 × 541 =
3,787
composite factor = 2
3 × 541 =
4,328
composite factor = 3
2 × 541 =
4,869
composite factor = 2
2 × 3 × 541 =
6,492
composite factor = 2 × 7 × 541 =
7,574
composite factor = 2 × 3
2 × 541 =
9,738
composite factor = 3 × 7 × 541 =
11,361
composite factor = 2
3 × 3 × 541 =
12,984
composite factor = 2
2 × 7 × 541 =
15,148
composite factor = 2
2 × 3
2 × 541 =
19,476
composite factor = 2 × 3 × 7 × 541 =
22,722
composite factor = 2
3 × 7 × 541 =
30,296
composite factor = 3
2 × 7 × 541 =
34,083
composite factor = 2
3 × 3
2 × 541 =
38,952
composite factor = 2
2 × 3 × 7 × 541 =
45,444
composite factor = 2 × 3
2 × 7 × 541 =
68,166
composite factor = 2
3 × 3 × 7 × 541 =
90,888
composite factor = 2
2 × 3
2 × 7 × 541 =
136,332
composite factor = 2
3 × 3
2 × 7 × 541 =
272,664
48 factors (divisors)
What times what is 272,664?
What number multiplied by what number equals 272,664?
All the combinations of any two natural numbers whose product equals 272,664.
1 × 272,664 = 272,664
2 × 136,332 = 272,664
3 × 90,888 = 272,664
4 × 68,166 = 272,664
6 × 45,444 = 272,664
7 × 38,952 = 272,664
8 × 34,083 = 272,664
9 × 30,296 = 272,664
12 × 22,722 = 272,664
14 × 19,476 = 272,664
18 × 15,148 = 272,664
21 × 12,984 = 272,664
24 × 11,361 = 272,664
28 × 9,738 = 272,664
36 × 7,574 = 272,664
42 × 6,492 = 272,664
56 × 4,869 = 272,664
63 × 4,328 = 272,664
72 × 3,787 = 272,664
84 × 3,246 = 272,664
126 × 2,164 = 272,664
168 × 1,623 = 272,664
252 × 1,082 = 272,664
504 × 541 = 272,664
24 unique multiplications The final answer:
(scroll down)