To find all the divisors of the number 269,874:
- 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 269,874:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
269,874 = 2 × 32 × 11 × 29 × 47
269,874 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 269,874
- 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
composite factor = 3
2 =
9
prime factor =
11
composite factor = 2 × 3
2 =
18
composite factor = 2 × 11 =
22
prime factor =
29
composite factor = 3 × 11 =
33
prime factor =
47
composite factor = 2 × 29 =
58
composite factor = 2 × 3 × 11 =
66
composite factor = 3 × 29 =
87
composite factor = 2 × 47 =
94
composite factor = 3
2 × 11 =
99
composite factor = 3 × 47 =
141
composite factor = 2 × 3 × 29 =
174
composite factor = 2 × 3
2 × 11 =
198
composite factor = 3
2 × 29 =
261
composite factor = 2 × 3 × 47 =
282
composite factor = 11 × 29 =
319
composite factor = 3
2 × 47 =
423
composite factor = 11 × 47 =
517
This list continues below...
... This list continues from above
composite factor = 2 × 3
2 × 29 =
522
composite factor = 2 × 11 × 29 =
638
composite factor = 2 × 3
2 × 47 =
846
composite factor = 3 × 11 × 29 =
957
composite factor = 2 × 11 × 47 =
1,034
composite factor = 29 × 47 =
1,363
composite factor = 3 × 11 × 47 =
1,551
composite factor = 2 × 3 × 11 × 29 =
1,914
composite factor = 2 × 29 × 47 =
2,726
composite factor = 3
2 × 11 × 29 =
2,871
composite factor = 2 × 3 × 11 × 47 =
3,102
composite factor = 3 × 29 × 47 =
4,089
composite factor = 3
2 × 11 × 47 =
4,653
composite factor = 2 × 3
2 × 11 × 29 =
5,742
composite factor = 2 × 3 × 29 × 47 =
8,178
composite factor = 2 × 3
2 × 11 × 47 =
9,306
composite factor = 3
2 × 29 × 47 =
12,267
composite factor = 11 × 29 × 47 =
14,993
composite factor = 2 × 3
2 × 29 × 47 =
24,534
composite factor = 2 × 11 × 29 × 47 =
29,986
composite factor = 3 × 11 × 29 × 47 =
44,979
composite factor = 2 × 3 × 11 × 29 × 47 =
89,958
composite factor = 3
2 × 11 × 29 × 47 =
134,937
composite factor = 2 × 3
2 × 11 × 29 × 47 =
269,874
48 factors (divisors)
What times what is 269,874?
What number multiplied by what number equals 269,874?
All the combinations of any two natural numbers whose product equals 269,874.
1 × 269,874 = 269,874
2 × 134,937 = 269,874
3 × 89,958 = 269,874
6 × 44,979 = 269,874
9 × 29,986 = 269,874
11 × 24,534 = 269,874
18 × 14,993 = 269,874
22 × 12,267 = 269,874
29 × 9,306 = 269,874
33 × 8,178 = 269,874
47 × 5,742 = 269,874
58 × 4,653 = 269,874
66 × 4,089 = 269,874
87 × 3,102 = 269,874
94 × 2,871 = 269,874
99 × 2,726 = 269,874
141 × 1,914 = 269,874
174 × 1,551 = 269,874
198 × 1,363 = 269,874
261 × 1,034 = 269,874
282 × 957 = 269,874
319 × 846 = 269,874
423 × 638 = 269,874
517 × 522 = 269,874
24 unique multiplications The final answer:
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