To find all the divisors of the number 3,607,149:
- 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 3,607,149:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
3,607,149 = 3 × 7 × 13 × 73 × 181
3,607,149 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) × (1 + 1) × (1 + 1) × (1 + 1) = 2 × 2 × 2 × 2 × 2 = 32
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 3,607,149
- Multiply the prime factors involved in the prime factorization of the number in all their unique combinations, that give different results.
- 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 =
3
prime factor =
7
prime factor =
13
composite factor = 3 × 7 =
21
composite factor = 3 × 13 =
39
prime factor =
73
composite factor = 7 × 13 =
91
prime factor =
181
composite factor = 3 × 73 =
219
composite factor = 3 × 7 × 13 =
273
composite factor = 7 × 73 =
511
composite factor = 3 × 181 =
543
composite factor = 13 × 73 =
949
composite factor = 7 × 181 =
1,267
composite factor = 3 × 7 × 73 =
1,533
This list continues below...
... This list continues from above
composite factor = 13 × 181 =
2,353
composite factor = 3 × 13 × 73 =
2,847
composite factor = 3 × 7 × 181 =
3,801
composite factor = 7 × 13 × 73 =
6,643
composite factor = 3 × 13 × 181 =
7,059
composite factor = 73 × 181 =
13,213
composite factor = 7 × 13 × 181 =
16,471
composite factor = 3 × 7 × 13 × 73 =
19,929
composite factor = 3 × 73 × 181 =
39,639
composite factor = 3 × 7 × 13 × 181 =
49,413
composite factor = 7 × 73 × 181 =
92,491
composite factor = 13 × 73 × 181 =
171,769
composite factor = 3 × 7 × 73 × 181 =
277,473
composite factor = 3 × 13 × 73 × 181 =
515,307
composite factor = 7 × 13 × 73 × 181 =
1,202,383
composite factor = 3 × 7 × 13 × 73 × 181 =
3,607,149
32 factors (divisors)
What times what is 3,607,149?
What number multiplied by what number equals 3,607,149?
All the combinations of any two natural numbers whose product equals 3,607,149.
1 × 3,607,149 = 3,607,149
3 × 1,202,383 = 3,607,149
7 × 515,307 = 3,607,149
13 × 277,473 = 3,607,149
21 × 171,769 = 3,607,149
39 × 92,491 = 3,607,149
73 × 49,413 = 3,607,149
91 × 39,639 = 3,607,149
181 × 19,929 = 3,607,149
219 × 16,471 = 3,607,149
273 × 13,213 = 3,607,149
511 × 7,059 = 3,607,149
543 × 6,643 = 3,607,149
949 × 3,801 = 3,607,149
1,267 × 2,847 = 3,607,149
1,533 × 2,353 = 3,607,149
16 unique multiplications The final answer:
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