To find all the divisors of the number 846,468:
- 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 846,468:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
846,468 = 22 × 32 × 7 × 3,359
846,468 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) × (2 + 1) × (1 + 1) × (1 + 1) = 3 × 3 × 2 × 2 = 36
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 846,468
- 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 = 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
2 × 7 =
28
composite factor = 2
2 × 3
2 =
36
composite factor = 2 × 3 × 7 =
42
composite factor = 3
2 × 7 =
63
composite factor = 2
2 × 3 × 7 =
84
composite factor = 2 × 3
2 × 7 =
126
composite factor = 2
2 × 3
2 × 7 =
252
This list continues below...
... This list continues from above
prime factor =
3,359
composite factor = 2 × 3,359 =
6,718
composite factor = 3 × 3,359 =
10,077
composite factor = 2
2 × 3,359 =
13,436
composite factor = 2 × 3 × 3,359 =
20,154
composite factor = 7 × 3,359 =
23,513
composite factor = 3
2 × 3,359 =
30,231
composite factor = 2
2 × 3 × 3,359 =
40,308
composite factor = 2 × 7 × 3,359 =
47,026
composite factor = 2 × 3
2 × 3,359 =
60,462
composite factor = 3 × 7 × 3,359 =
70,539
composite factor = 2
2 × 7 × 3,359 =
94,052
composite factor = 2
2 × 3
2 × 3,359 =
120,924
composite factor = 2 × 3 × 7 × 3,359 =
141,078
composite factor = 3
2 × 7 × 3,359 =
211,617
composite factor = 2
2 × 3 × 7 × 3,359 =
282,156
composite factor = 2 × 3
2 × 7 × 3,359 =
423,234
composite factor = 2
2 × 3
2 × 7 × 3,359 =
846,468
36 factors (divisors)
What times what is 846,468?
What number multiplied by what number equals 846,468?
All the combinations of any two natural numbers whose product equals 846,468.
1 × 846,468 = 846,468
2 × 423,234 = 846,468
3 × 282,156 = 846,468
4 × 211,617 = 846,468
6 × 141,078 = 846,468
7 × 120,924 = 846,468
9 × 94,052 = 846,468
12 × 70,539 = 846,468
14 × 60,462 = 846,468
18 × 47,026 = 846,468
21 × 40,308 = 846,468
28 × 30,231 = 846,468
36 × 23,513 = 846,468
42 × 20,154 = 846,468
63 × 13,436 = 846,468
84 × 10,077 = 846,468
126 × 6,718 = 846,468
252 × 3,359 = 846,468
18 unique multiplications The final answer:
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