To find all the divisors of the number 1,048,230:
- 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 1,048,230:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
1,048,230 = 2 × 32 × 5 × 19 × 613
1,048,230 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 1,048,230
- 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
prime factor =
19
composite factor = 2 × 3 × 5 =
30
composite factor = 2 × 19 =
38
composite factor = 3
2 × 5 =
45
composite factor = 3 × 19 =
57
composite factor = 2 × 3
2 × 5 =
90
composite factor = 5 × 19 =
95
composite factor = 2 × 3 × 19 =
114
composite factor = 3
2 × 19 =
171
composite factor = 2 × 5 × 19 =
190
composite factor = 3 × 5 × 19 =
285
composite factor = 2 × 3
2 × 19 =
342
composite factor = 2 × 3 × 5 × 19 =
570
prime factor =
613
composite factor = 3
2 × 5 × 19 =
855
This list continues below...
... This list continues from above
composite factor = 2 × 613 =
1,226
composite factor = 2 × 3
2 × 5 × 19 =
1,710
composite factor = 3 × 613 =
1,839
composite factor = 5 × 613 =
3,065
composite factor = 2 × 3 × 613 =
3,678
composite factor = 3
2 × 613 =
5,517
composite factor = 2 × 5 × 613 =
6,130
composite factor = 3 × 5 × 613 =
9,195
composite factor = 2 × 3
2 × 613 =
11,034
composite factor = 19 × 613 =
11,647
composite factor = 2 × 3 × 5 × 613 =
18,390
composite factor = 2 × 19 × 613 =
23,294
composite factor = 3
2 × 5 × 613 =
27,585
composite factor = 3 × 19 × 613 =
34,941
composite factor = 2 × 3
2 × 5 × 613 =
55,170
composite factor = 5 × 19 × 613 =
58,235
composite factor = 2 × 3 × 19 × 613 =
69,882
composite factor = 3
2 × 19 × 613 =
104,823
composite factor = 2 × 5 × 19 × 613 =
116,470
composite factor = 3 × 5 × 19 × 613 =
174,705
composite factor = 2 × 3
2 × 19 × 613 =
209,646
composite factor = 2 × 3 × 5 × 19 × 613 =
349,410
composite factor = 3
2 × 5 × 19 × 613 =
524,115
composite factor = 2 × 3
2 × 5 × 19 × 613 =
1,048,230
48 factors (divisors)
What times what is 1,048,230?
What number multiplied by what number equals 1,048,230?
All the combinations of any two natural numbers whose product equals 1,048,230.
1 × 1,048,230 = 1,048,230
2 × 524,115 = 1,048,230
3 × 349,410 = 1,048,230
5 × 209,646 = 1,048,230
6 × 174,705 = 1,048,230
9 × 116,470 = 1,048,230
10 × 104,823 = 1,048,230
15 × 69,882 = 1,048,230
18 × 58,235 = 1,048,230
19 × 55,170 = 1,048,230
30 × 34,941 = 1,048,230
38 × 27,585 = 1,048,230
45 × 23,294 = 1,048,230
57 × 18,390 = 1,048,230
90 × 11,647 = 1,048,230
95 × 11,034 = 1,048,230
114 × 9,195 = 1,048,230
171 × 6,130 = 1,048,230
190 × 5,517 = 1,048,230
285 × 3,678 = 1,048,230
342 × 3,065 = 1,048,230
570 × 1,839 = 1,048,230
613 × 1,710 = 1,048,230
855 × 1,226 = 1,048,230
24 unique multiplications The final answer:
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