To find all the divisors of the number 713,280:
- 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 713,280:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
713,280 = 26 × 3 × 5 × 743
713,280 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 = (6 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 7 × 2 × 2 × 2 = 56
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 713,280
- 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
prime factor =
5
composite factor = 2 × 3 =
6
composite factor = 2
3 =
8
composite factor = 2 × 5 =
10
composite factor = 2
2 × 3 =
12
composite factor = 3 × 5 =
15
composite factor = 2
4 =
16
composite factor = 2
2 × 5 =
20
composite factor = 2
3 × 3 =
24
composite factor = 2 × 3 × 5 =
30
composite factor = 2
5 =
32
composite factor = 2
3 × 5 =
40
composite factor = 2
4 × 3 =
48
composite factor = 2
2 × 3 × 5 =
60
composite factor = 2
6 =
64
composite factor = 2
4 × 5 =
80
composite factor = 2
5 × 3 =
96
composite factor = 2
3 × 3 × 5 =
120
composite factor = 2
5 × 5 =
160
composite factor = 2
6 × 3 =
192
composite factor = 2
4 × 3 × 5 =
240
composite factor = 2
6 × 5 =
320
composite factor = 2
5 × 3 × 5 =
480
prime factor =
743
This list continues below...
... This list continues from above
composite factor = 2
6 × 3 × 5 =
960
composite factor = 2 × 743 =
1,486
composite factor = 3 × 743 =
2,229
composite factor = 2
2 × 743 =
2,972
composite factor = 5 × 743 =
3,715
composite factor = 2 × 3 × 743 =
4,458
composite factor = 2
3 × 743 =
5,944
composite factor = 2 × 5 × 743 =
7,430
composite factor = 2
2 × 3 × 743 =
8,916
composite factor = 3 × 5 × 743 =
11,145
composite factor = 2
4 × 743 =
11,888
composite factor = 2
2 × 5 × 743 =
14,860
composite factor = 2
3 × 3 × 743 =
17,832
composite factor = 2 × 3 × 5 × 743 =
22,290
composite factor = 2
5 × 743 =
23,776
composite factor = 2
3 × 5 × 743 =
29,720
composite factor = 2
4 × 3 × 743 =
35,664
composite factor = 2
2 × 3 × 5 × 743 =
44,580
composite factor = 2
6 × 743 =
47,552
composite factor = 2
4 × 5 × 743 =
59,440
composite factor = 2
5 × 3 × 743 =
71,328
composite factor = 2
3 × 3 × 5 × 743 =
89,160
composite factor = 2
5 × 5 × 743 =
118,880
composite factor = 2
6 × 3 × 743 =
142,656
composite factor = 2
4 × 3 × 5 × 743 =
178,320
composite factor = 2
6 × 5 × 743 =
237,760
composite factor = 2
5 × 3 × 5 × 743 =
356,640
composite factor = 2
6 × 3 × 5 × 743 =
713,280
56 factors (divisors)
What times what is 713,280?
What number multiplied by what number equals 713,280?
All the combinations of any two natural numbers whose product equals 713,280.
1 × 713,280 = 713,280
2 × 356,640 = 713,280
3 × 237,760 = 713,280
4 × 178,320 = 713,280
5 × 142,656 = 713,280
6 × 118,880 = 713,280
8 × 89,160 = 713,280
10 × 71,328 = 713,280
12 × 59,440 = 713,280
15 × 47,552 = 713,280
16 × 44,580 = 713,280
20 × 35,664 = 713,280
24 × 29,720 = 713,280
30 × 23,776 = 713,280
32 × 22,290 = 713,280
40 × 17,832 = 713,280
48 × 14,860 = 713,280
60 × 11,888 = 713,280
64 × 11,145 = 713,280
80 × 8,916 = 713,280
96 × 7,430 = 713,280
120 × 5,944 = 713,280
160 × 4,458 = 713,280
192 × 3,715 = 713,280
240 × 2,972 = 713,280
320 × 2,229 = 713,280
480 × 1,486 = 713,280
743 × 960 = 713,280
28 unique multiplications The final answer:
(scroll down)