To find all the divisors of the number 856,424,850:
- 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 856,424,850:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
856,424,850 = 2 × 3 × 52 × 2,339 × 2,441
856,424,850 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 = (1 + 1) × (1 + 1) × (2 + 1) × (1 + 1) × (1 + 1) = 2 × 2 × 3 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 856,424,850
- 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
prime factor =
5
composite factor = 2 × 3 =
6
composite factor = 2 × 5 =
10
composite factor = 3 × 5 =
15
composite factor = 5
2 =
25
composite factor = 2 × 3 × 5 =
30
composite factor = 2 × 5
2 =
50
composite factor = 3 × 5
2 =
75
composite factor = 2 × 3 × 5
2 =
150
prime factor =
2,339
prime factor =
2,441
composite factor = 2 × 2,339 =
4,678
composite factor = 2 × 2,441 =
4,882
composite factor = 3 × 2,339 =
7,017
composite factor = 3 × 2,441 =
7,323
composite factor = 5 × 2,339 =
11,695
composite factor = 5 × 2,441 =
12,205
composite factor = 2 × 3 × 2,339 =
14,034
composite factor = 2 × 3 × 2,441 =
14,646
composite factor = 2 × 5 × 2,339 =
23,390
composite factor = 2 × 5 × 2,441 =
24,410
This list continues below...
... This list continues from above
composite factor = 3 × 5 × 2,339 =
35,085
composite factor = 3 × 5 × 2,441 =
36,615
composite factor = 5
2 × 2,339 =
58,475
composite factor = 5
2 × 2,441 =
61,025
composite factor = 2 × 3 × 5 × 2,339 =
70,170
composite factor = 2 × 3 × 5 × 2,441 =
73,230
composite factor = 2 × 5
2 × 2,339 =
116,950
composite factor = 2 × 5
2 × 2,441 =
122,050
composite factor = 3 × 5
2 × 2,339 =
175,425
composite factor = 3 × 5
2 × 2,441 =
183,075
composite factor = 2 × 3 × 5
2 × 2,339 =
350,850
composite factor = 2 × 3 × 5
2 × 2,441 =
366,150
composite factor = 2,339 × 2,441 =
5,709,499
composite factor = 2 × 2,339 × 2,441 =
11,418,998
composite factor = 3 × 2,339 × 2,441 =
17,128,497
composite factor = 5 × 2,339 × 2,441 =
28,547,495
composite factor = 2 × 3 × 2,339 × 2,441 =
34,256,994
composite factor = 2 × 5 × 2,339 × 2,441 =
57,094,990
composite factor = 3 × 5 × 2,339 × 2,441 =
85,642,485
composite factor = 5
2 × 2,339 × 2,441 =
142,737,475
composite factor = 2 × 3 × 5 × 2,339 × 2,441 =
171,284,970
composite factor = 2 × 5
2 × 2,339 × 2,441 =
285,474,950
composite factor = 3 × 5
2 × 2,339 × 2,441 =
428,212,425
composite factor = 2 × 3 × 5
2 × 2,339 × 2,441 =
856,424,850
48 factors (divisors)
What times what is 856,424,850?
What number multiplied by what number equals 856,424,850?
All the combinations of any two natural numbers whose product equals 856,424,850.
1 × 856,424,850 = 856,424,850
2 × 428,212,425 = 856,424,850
3 × 285,474,950 = 856,424,850
5 × 171,284,970 = 856,424,850
6 × 142,737,475 = 856,424,850
10 × 85,642,485 = 856,424,850
15 × 57,094,990 = 856,424,850
25 × 34,256,994 = 856,424,850
30 × 28,547,495 = 856,424,850
50 × 17,128,497 = 856,424,850
75 × 11,418,998 = 856,424,850
150 × 5,709,499 = 856,424,850
2,339 × 366,150 = 856,424,850
2,441 × 350,850 = 856,424,850
4,678 × 183,075 = 856,424,850
4,882 × 175,425 = 856,424,850
7,017 × 122,050 = 856,424,850
7,323 × 116,950 = 856,424,850
11,695 × 73,230 = 856,424,850
12,205 × 70,170 = 856,424,850
14,034 × 61,025 = 856,424,850
14,646 × 58,475 = 856,424,850
23,390 × 36,615 = 856,424,850
24,410 × 35,085 = 856,424,850
24 unique multiplications The final answer:
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