To find all the divisors of the number 349,398:
- 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 349,398:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
349,398 = 2 × 32 × 7 × 47 × 59
349,398 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) × (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 349,398
- 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
composite factor = 2 × 7 =
14
composite factor = 2 × 3
2 =
18
composite factor = 3 × 7 =
21
composite factor = 2 × 3 × 7 =
42
prime factor =
47
prime factor =
59
composite factor = 3
2 × 7 =
63
composite factor = 2 × 47 =
94
composite factor = 2 × 59 =
118
composite factor = 2 × 3
2 × 7 =
126
composite factor = 3 × 47 =
141
composite factor = 3 × 59 =
177
composite factor = 2 × 3 × 47 =
282
composite factor = 7 × 47 =
329
composite factor = 2 × 3 × 59 =
354
composite factor = 7 × 59 =
413
composite factor = 3
2 × 47 =
423
composite factor = 3
2 × 59 =
531
This list continues below...
... This list continues from above
composite factor = 2 × 7 × 47 =
658
composite factor = 2 × 7 × 59 =
826
composite factor = 2 × 3
2 × 47 =
846
composite factor = 3 × 7 × 47 =
987
composite factor = 2 × 3
2 × 59 =
1,062
composite factor = 3 × 7 × 59 =
1,239
composite factor = 2 × 3 × 7 × 47 =
1,974
composite factor = 2 × 3 × 7 × 59 =
2,478
composite factor = 47 × 59 =
2,773
composite factor = 3
2 × 7 × 47 =
2,961
composite factor = 3
2 × 7 × 59 =
3,717
composite factor = 2 × 47 × 59 =
5,546
composite factor = 2 × 3
2 × 7 × 47 =
5,922
composite factor = 2 × 3
2 × 7 × 59 =
7,434
composite factor = 3 × 47 × 59 =
8,319
composite factor = 2 × 3 × 47 × 59 =
16,638
composite factor = 7 × 47 × 59 =
19,411
composite factor = 3
2 × 47 × 59 =
24,957
composite factor = 2 × 7 × 47 × 59 =
38,822
composite factor = 2 × 3
2 × 47 × 59 =
49,914
composite factor = 3 × 7 × 47 × 59 =
58,233
composite factor = 2 × 3 × 7 × 47 × 59 =
116,466
composite factor = 3
2 × 7 × 47 × 59 =
174,699
composite factor = 2 × 3
2 × 7 × 47 × 59 =
349,398
48 factors (divisors)
What times what is 349,398?
What number multiplied by what number equals 349,398?
All the combinations of any two natural numbers whose product equals 349,398.
1 × 349,398 = 349,398
2 × 174,699 = 349,398
3 × 116,466 = 349,398
6 × 58,233 = 349,398
7 × 49,914 = 349,398
9 × 38,822 = 349,398
14 × 24,957 = 349,398
18 × 19,411 = 349,398
21 × 16,638 = 349,398
42 × 8,319 = 349,398
47 × 7,434 = 349,398
59 × 5,922 = 349,398
63 × 5,546 = 349,398
94 × 3,717 = 349,398
118 × 2,961 = 349,398
126 × 2,773 = 349,398
141 × 2,478 = 349,398
177 × 1,974 = 349,398
282 × 1,239 = 349,398
329 × 1,062 = 349,398
354 × 987 = 349,398
413 × 846 = 349,398
423 × 826 = 349,398
531 × 658 = 349,398
24 unique multiplications The final answer:
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