To find all the divisors of the number 829,950:
- 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 829,950:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
829,950 = 2 × 3 × 52 × 11 × 503
829,950 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 829,950
- 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
prime factor =
11
composite factor = 3 × 5 =
15
composite factor = 2 × 11 =
22
composite factor = 5
2 =
25
composite factor = 2 × 3 × 5 =
30
composite factor = 3 × 11 =
33
composite factor = 2 × 5
2 =
50
composite factor = 5 × 11 =
55
composite factor = 2 × 3 × 11 =
66
composite factor = 3 × 5
2 =
75
composite factor = 2 × 5 × 11 =
110
composite factor = 2 × 3 × 5
2 =
150
composite factor = 3 × 5 × 11 =
165
composite factor = 5
2 × 11 =
275
composite factor = 2 × 3 × 5 × 11 =
330
prime factor =
503
composite factor = 2 × 5
2 × 11 =
550
composite factor = 3 × 5
2 × 11 =
825
This list continues below...
... This list continues from above
composite factor = 2 × 503 =
1,006
composite factor = 3 × 503 =
1,509
composite factor = 2 × 3 × 5
2 × 11 =
1,650
composite factor = 5 × 503 =
2,515
composite factor = 2 × 3 × 503 =
3,018
composite factor = 2 × 5 × 503 =
5,030
composite factor = 11 × 503 =
5,533
composite factor = 3 × 5 × 503 =
7,545
composite factor = 2 × 11 × 503 =
11,066
composite factor = 5
2 × 503 =
12,575
composite factor = 2 × 3 × 5 × 503 =
15,090
composite factor = 3 × 11 × 503 =
16,599
composite factor = 2 × 5
2 × 503 =
25,150
composite factor = 5 × 11 × 503 =
27,665
composite factor = 2 × 3 × 11 × 503 =
33,198
composite factor = 3 × 5
2 × 503 =
37,725
composite factor = 2 × 5 × 11 × 503 =
55,330
composite factor = 2 × 3 × 5
2 × 503 =
75,450
composite factor = 3 × 5 × 11 × 503 =
82,995
composite factor = 5
2 × 11 × 503 =
138,325
composite factor = 2 × 3 × 5 × 11 × 503 =
165,990
composite factor = 2 × 5
2 × 11 × 503 =
276,650
composite factor = 3 × 5
2 × 11 × 503 =
414,975
composite factor = 2 × 3 × 5
2 × 11 × 503 =
829,950
48 factors (divisors)
What times what is 829,950?
What number multiplied by what number equals 829,950?
All the combinations of any two natural numbers whose product equals 829,950.
1 × 829,950 = 829,950
2 × 414,975 = 829,950
3 × 276,650 = 829,950
5 × 165,990 = 829,950
6 × 138,325 = 829,950
10 × 82,995 = 829,950
11 × 75,450 = 829,950
15 × 55,330 = 829,950
22 × 37,725 = 829,950
25 × 33,198 = 829,950
30 × 27,665 = 829,950
33 × 25,150 = 829,950
50 × 16,599 = 829,950
55 × 15,090 = 829,950
66 × 12,575 = 829,950
75 × 11,066 = 829,950
110 × 7,545 = 829,950
150 × 5,533 = 829,950
165 × 5,030 = 829,950
275 × 3,018 = 829,950
330 × 2,515 = 829,950
503 × 1,650 = 829,950
550 × 1,509 = 829,950
825 × 1,006 = 829,950
24 unique multiplications The final answer:
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