To find all the divisors of the number 233,002:
- 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 233,002:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
233,002 = 2 × 7 × 11 × 17 × 89
233,002 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 233,002
- 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 =
2
prime factor =
7
prime factor =
11
composite factor = 2 × 7 =
14
prime factor =
17
composite factor = 2 × 11 =
22
composite factor = 2 × 17 =
34
composite factor = 7 × 11 =
77
prime factor =
89
composite factor = 7 × 17 =
119
composite factor = 2 × 7 × 11 =
154
composite factor = 2 × 89 =
178
composite factor = 11 × 17 =
187
composite factor = 2 × 7 × 17 =
238
composite factor = 2 × 11 × 17 =
374
This list continues below...
... This list continues from above
composite factor = 7 × 89 =
623
composite factor = 11 × 89 =
979
composite factor = 2 × 7 × 89 =
1,246
composite factor = 7 × 11 × 17 =
1,309
composite factor = 17 × 89 =
1,513
composite factor = 2 × 11 × 89 =
1,958
composite factor = 2 × 7 × 11 × 17 =
2,618
composite factor = 2 × 17 × 89 =
3,026
composite factor = 7 × 11 × 89 =
6,853
composite factor = 7 × 17 × 89 =
10,591
composite factor = 2 × 7 × 11 × 89 =
13,706
composite factor = 11 × 17 × 89 =
16,643
composite factor = 2 × 7 × 17 × 89 =
21,182
composite factor = 2 × 11 × 17 × 89 =
33,286
composite factor = 7 × 11 × 17 × 89 =
116,501
composite factor = 2 × 7 × 11 × 17 × 89 =
233,002
32 factors (divisors)
What times what is 233,002?
What number multiplied by what number equals 233,002?
All the combinations of any two natural numbers whose product equals 233,002.
1 × 233,002 = 233,002
2 × 116,501 = 233,002
7 × 33,286 = 233,002
11 × 21,182 = 233,002
14 × 16,643 = 233,002
17 × 13,706 = 233,002
22 × 10,591 = 233,002
34 × 6,853 = 233,002
77 × 3,026 = 233,002
89 × 2,618 = 233,002
119 × 1,958 = 233,002
154 × 1,513 = 233,002
178 × 1,309 = 233,002
187 × 1,246 = 233,002
238 × 979 = 233,002
374 × 623 = 233,002
16 unique multiplications The final answer:
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