To find all the divisors of the number 34,398:
- 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 34,398:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
34,398 = 2 × 33 × 72 × 13
34,398 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) × (3 + 1) × (2 + 1) × (1 + 1) = 2 × 4 × 3 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 34,398
- 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
3 =
27
composite factor = 3 × 13 =
39
composite factor = 2 × 3 × 7 =
42
composite factor = 7
2 =
49
composite factor = 2 × 3
3 =
54
composite factor = 3
2 × 7 =
63
composite factor = 2 × 3 × 13 =
78
composite factor = 7 × 13 =
91
composite factor = 2 × 7
2 =
98
composite factor = 3
2 × 13 =
117
composite factor = 2 × 3
2 × 7 =
126
composite factor = 3 × 7
2 =
147
composite factor = 2 × 7 × 13 =
182
This list continues below...
... This list continues from above
composite factor = 3
3 × 7 =
189
composite factor = 2 × 3
2 × 13 =
234
composite factor = 3 × 7 × 13 =
273
composite factor = 2 × 3 × 7
2 =
294
composite factor = 3
3 × 13 =
351
composite factor = 2 × 3
3 × 7 =
378
composite factor = 3
2 × 7
2 =
441
composite factor = 2 × 3 × 7 × 13 =
546
composite factor = 7
2 × 13 =
637
composite factor = 2 × 3
3 × 13 =
702
composite factor = 3
2 × 7 × 13 =
819
composite factor = 2 × 3
2 × 7
2 =
882
composite factor = 2 × 7
2 × 13 =
1,274
composite factor = 3
3 × 7
2 =
1,323
composite factor = 2 × 3
2 × 7 × 13 =
1,638
composite factor = 3 × 7
2 × 13 =
1,911
composite factor = 3
3 × 7 × 13 =
2,457
composite factor = 2 × 3
3 × 7
2 =
2,646
composite factor = 2 × 3 × 7
2 × 13 =
3,822
composite factor = 2 × 3
3 × 7 × 13 =
4,914
composite factor = 3
2 × 7
2 × 13 =
5,733
composite factor = 2 × 3
2 × 7
2 × 13 =
11,466
composite factor = 3
3 × 7
2 × 13 =
17,199
composite factor = 2 × 3
3 × 7
2 × 13 =
34,398
48 factors (divisors)
What times what is 34,398?
What number multiplied by what number equals 34,398?
All the combinations of any two natural numbers whose product equals 34,398.
1 × 34,398 = 34,398
2 × 17,199 = 34,398
3 × 11,466 = 34,398
6 × 5,733 = 34,398
7 × 4,914 = 34,398
9 × 3,822 = 34,398
13 × 2,646 = 34,398
14 × 2,457 = 34,398
18 × 1,911 = 34,398
21 × 1,638 = 34,398
26 × 1,323 = 34,398
27 × 1,274 = 34,398
39 × 882 = 34,398
42 × 819 = 34,398
49 × 702 = 34,398
54 × 637 = 34,398
63 × 546 = 34,398
78 × 441 = 34,398
91 × 378 = 34,398
98 × 351 = 34,398
117 × 294 = 34,398
126 × 273 = 34,398
147 × 234 = 34,398
182 × 189 = 34,398
24 unique multiplications The final answer:
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