To find all the divisors of the number 1,069,140:
- 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 1,069,140:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
1,069,140 = 22 × 3 × 5 × 103 × 173
1,069,140 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 = (2 + 1) × (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 3 × 2 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 1,069,140
- 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
2 =
4
prime factor =
5
composite factor = 2 × 3 =
6
composite factor = 2 × 5 =
10
composite factor = 2
2 × 3 =
12
composite factor = 3 × 5 =
15
composite factor = 2
2 × 5 =
20
composite factor = 2 × 3 × 5 =
30
composite factor = 2
2 × 3 × 5 =
60
prime factor =
103
prime factor =
173
composite factor = 2 × 103 =
206
composite factor = 3 × 103 =
309
composite factor = 2 × 173 =
346
composite factor = 2
2 × 103 =
412
composite factor = 5 × 103 =
515
composite factor = 3 × 173 =
519
composite factor = 2 × 3 × 103 =
618
composite factor = 2
2 × 173 =
692
composite factor = 5 × 173 =
865
composite factor = 2 × 5 × 103 =
1,030
This list continues below...
... This list continues from above
composite factor = 2 × 3 × 173 =
1,038
composite factor = 2
2 × 3 × 103 =
1,236
composite factor = 3 × 5 × 103 =
1,545
composite factor = 2 × 5 × 173 =
1,730
composite factor = 2
2 × 5 × 103 =
2,060
composite factor = 2
2 × 3 × 173 =
2,076
composite factor = 3 × 5 × 173 =
2,595
composite factor = 2 × 3 × 5 × 103 =
3,090
composite factor = 2
2 × 5 × 173 =
3,460
composite factor = 2 × 3 × 5 × 173 =
5,190
composite factor = 2
2 × 3 × 5 × 103 =
6,180
composite factor = 2
2 × 3 × 5 × 173 =
10,380
composite factor = 103 × 173 =
17,819
composite factor = 2 × 103 × 173 =
35,638
composite factor = 3 × 103 × 173 =
53,457
composite factor = 2
2 × 103 × 173 =
71,276
composite factor = 5 × 103 × 173 =
89,095
composite factor = 2 × 3 × 103 × 173 =
106,914
composite factor = 2 × 5 × 103 × 173 =
178,190
composite factor = 2
2 × 3 × 103 × 173 =
213,828
composite factor = 3 × 5 × 103 × 173 =
267,285
composite factor = 2
2 × 5 × 103 × 173 =
356,380
composite factor = 2 × 3 × 5 × 103 × 173 =
534,570
composite factor = 2
2 × 3 × 5 × 103 × 173 =
1,069,140
48 factors (divisors)
What times what is 1,069,140?
What number multiplied by what number equals 1,069,140?
All the combinations of any two natural numbers whose product equals 1,069,140.
1 × 1,069,140 = 1,069,140
2 × 534,570 = 1,069,140
3 × 356,380 = 1,069,140
4 × 267,285 = 1,069,140
5 × 213,828 = 1,069,140
6 × 178,190 = 1,069,140
10 × 106,914 = 1,069,140
12 × 89,095 = 1,069,140
15 × 71,276 = 1,069,140
20 × 53,457 = 1,069,140
30 × 35,638 = 1,069,140
60 × 17,819 = 1,069,140
103 × 10,380 = 1,069,140
173 × 6,180 = 1,069,140
206 × 5,190 = 1,069,140
309 × 3,460 = 1,069,140
346 × 3,090 = 1,069,140
412 × 2,595 = 1,069,140
515 × 2,076 = 1,069,140
519 × 2,060 = 1,069,140
618 × 1,730 = 1,069,140
692 × 1,545 = 1,069,140
865 × 1,236 = 1,069,140
1,030 × 1,038 = 1,069,140
24 unique multiplications The final answer:
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