To find all the divisors of the number 430,794:
- 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 430,794:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
430,794 = 2 × 32 × 7 × 13 × 263
430,794 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) × (2 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 2 × 3 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 430,794
- 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 × 3 =
6
prime factor =
7
composite factor = 3
2 =
9
prime factor =
13
composite factor = 2 × 7 =
14
composite factor = 2 × 3
2 =
18
composite factor = 3 × 7 =
21
composite factor = 2 × 13 =
26
composite factor = 3 × 13 =
39
composite factor = 2 × 3 × 7 =
42
composite factor = 3
2 × 7 =
63
composite factor = 2 × 3 × 13 =
78
composite factor = 7 × 13 =
91
composite factor = 3
2 × 13 =
117
composite factor = 2 × 3
2 × 7 =
126
composite factor = 2 × 7 × 13 =
182
composite factor = 2 × 3
2 × 13 =
234
prime factor =
263
composite factor = 3 × 7 × 13 =
273
composite factor = 2 × 263 =
526
composite factor = 2 × 3 × 7 × 13 =
546
This list continues below...
... This list continues from above
composite factor = 3 × 263 =
789
composite factor = 3
2 × 7 × 13 =
819
composite factor = 2 × 3 × 263 =
1,578
composite factor = 2 × 3
2 × 7 × 13 =
1,638
composite factor = 7 × 263 =
1,841
composite factor = 3
2 × 263 =
2,367
composite factor = 13 × 263 =
3,419
composite factor = 2 × 7 × 263 =
3,682
composite factor = 2 × 3
2 × 263 =
4,734
composite factor = 3 × 7 × 263 =
5,523
composite factor = 2 × 13 × 263 =
6,838
composite factor = 3 × 13 × 263 =
10,257
composite factor = 2 × 3 × 7 × 263 =
11,046
composite factor = 3
2 × 7 × 263 =
16,569
composite factor = 2 × 3 × 13 × 263 =
20,514
composite factor = 7 × 13 × 263 =
23,933
composite factor = 3
2 × 13 × 263 =
30,771
composite factor = 2 × 3
2 × 7 × 263 =
33,138
composite factor = 2 × 7 × 13 × 263 =
47,866
composite factor = 2 × 3
2 × 13 × 263 =
61,542
composite factor = 3 × 7 × 13 × 263 =
71,799
composite factor = 2 × 3 × 7 × 13 × 263 =
143,598
composite factor = 3
2 × 7 × 13 × 263 =
215,397
composite factor = 2 × 3
2 × 7 × 13 × 263 =
430,794
48 factors (divisors)
What times what is 430,794?
What number multiplied by what number equals 430,794?
All the combinations of any two natural numbers whose product equals 430,794.
1 × 430,794 = 430,794
2 × 215,397 = 430,794
3 × 143,598 = 430,794
6 × 71,799 = 430,794
7 × 61,542 = 430,794
9 × 47,866 = 430,794
13 × 33,138 = 430,794
14 × 30,771 = 430,794
18 × 23,933 = 430,794
21 × 20,514 = 430,794
26 × 16,569 = 430,794
39 × 11,046 = 430,794
42 × 10,257 = 430,794
63 × 6,838 = 430,794
78 × 5,523 = 430,794
91 × 4,734 = 430,794
117 × 3,682 = 430,794
126 × 3,419 = 430,794
182 × 2,367 = 430,794
234 × 1,841 = 430,794
263 × 1,638 = 430,794
273 × 1,578 = 430,794
526 × 819 = 430,794
546 × 789 = 430,794
24 unique multiplications The final answer:
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