To find all the divisors of the number 786,012:
- 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 786,012:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
786,012 = 22 × 3 × 17 × 3,853
786,012 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 = (2 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 3 × 2 × 2 × 2 = 24
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 786,012
- 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
composite factor = 2
2 × 3 =
12
prime factor =
17
composite factor = 2 × 17 =
34
composite factor = 3 × 17 =
51
composite factor = 2
2 × 17 =
68
composite factor = 2 × 3 × 17 =
102
composite factor = 2
2 × 3 × 17 =
204
This list continues below...
... This list continues from above
prime factor =
3,853
composite factor = 2 × 3,853 =
7,706
composite factor = 3 × 3,853 =
11,559
composite factor = 2
2 × 3,853 =
15,412
composite factor = 2 × 3 × 3,853 =
23,118
composite factor = 2
2 × 3 × 3,853 =
46,236
composite factor = 17 × 3,853 =
65,501
composite factor = 2 × 17 × 3,853 =
131,002
composite factor = 3 × 17 × 3,853 =
196,503
composite factor = 2
2 × 17 × 3,853 =
262,004
composite factor = 2 × 3 × 17 × 3,853 =
393,006
composite factor = 2
2 × 3 × 17 × 3,853 =
786,012
24 factors (divisors)
What times what is 786,012?
What number multiplied by what number equals 786,012?
All the combinations of any two natural numbers whose product equals 786,012.
1 × 786,012 = 786,012
2 × 393,006 = 786,012
3 × 262,004 = 786,012
4 × 196,503 = 786,012
6 × 131,002 = 786,012
12 × 65,501 = 786,012
17 × 46,236 = 786,012
34 × 23,118 = 786,012
51 × 15,412 = 786,012
68 × 11,559 = 786,012
102 × 7,706 = 786,012
204 × 3,853 = 786,012
12 unique multiplications The final answer:
(scroll down)