To find all the divisors of the number 1,069,290:
- 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 1,069,290:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
1,069,290 = 2 × 32 × 5 × 1092
1,069,290 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) × (2 + 1) = 2 × 3 × 2 × 3 = 36
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 1,069,290
- 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
prime factor =
5
composite factor = 2 × 3 =
6
composite factor = 3
2 =
9
composite factor = 2 × 5 =
10
composite factor = 3 × 5 =
15
composite factor = 2 × 3
2 =
18
composite factor = 2 × 3 × 5 =
30
composite factor = 3
2 × 5 =
45
composite factor = 2 × 3
2 × 5 =
90
prime factor =
109
composite factor = 2 × 109 =
218
composite factor = 3 × 109 =
327
composite factor = 5 × 109 =
545
composite factor = 2 × 3 × 109 =
654
composite factor = 3
2 × 109 =
981
This list continues below...
... This list continues from above
composite factor = 2 × 5 × 109 =
1,090
composite factor = 3 × 5 × 109 =
1,635
composite factor = 2 × 3
2 × 109 =
1,962
composite factor = 2 × 3 × 5 × 109 =
3,270
composite factor = 3
2 × 5 × 109 =
4,905
composite factor = 2 × 3
2 × 5 × 109 =
9,810
composite factor = 109
2 =
11,881
composite factor = 2 × 109
2 =
23,762
composite factor = 3 × 109
2 =
35,643
composite factor = 5 × 109
2 =
59,405
composite factor = 2 × 3 × 109
2 =
71,286
composite factor = 3
2 × 109
2 =
106,929
composite factor = 2 × 5 × 109
2 =
118,810
composite factor = 3 × 5 × 109
2 =
178,215
composite factor = 2 × 3
2 × 109
2 =
213,858
composite factor = 2 × 3 × 5 × 109
2 =
356,430
composite factor = 3
2 × 5 × 109
2 =
534,645
composite factor = 2 × 3
2 × 5 × 109
2 =
1,069,290
36 factors (divisors)
What times what is 1,069,290?
What number multiplied by what number equals 1,069,290?
All the combinations of any two natural numbers whose product equals 1,069,290.
1 × 1,069,290 = 1,069,290
2 × 534,645 = 1,069,290
3 × 356,430 = 1,069,290
5 × 213,858 = 1,069,290
6 × 178,215 = 1,069,290
9 × 118,810 = 1,069,290
10 × 106,929 = 1,069,290
15 × 71,286 = 1,069,290
18 × 59,405 = 1,069,290
30 × 35,643 = 1,069,290
45 × 23,762 = 1,069,290
90 × 11,881 = 1,069,290
109 × 9,810 = 1,069,290
218 × 4,905 = 1,069,290
327 × 3,270 = 1,069,290
545 × 1,962 = 1,069,290
654 × 1,635 = 1,069,290
981 × 1,090 = 1,069,290
18 unique multiplications The final answer:
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