To find all the divisors of the number 239,999,963:
- 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 239,999,963:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
239,999,963 = 7 × 19 × 23 × 67 × 1,171
239,999,963 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 239,999,963
- 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 =
7
prime factor =
19
prime factor =
23
prime factor =
67
composite factor = 7 × 19 =
133
composite factor = 7 × 23 =
161
composite factor = 19 × 23 =
437
composite factor = 7 × 67 =
469
prime factor =
1,171
composite factor = 19 × 67 =
1,273
composite factor = 23 × 67 =
1,541
composite factor = 7 × 19 × 23 =
3,059
composite factor = 7 × 1,171 =
8,197
composite factor = 7 × 19 × 67 =
8,911
composite factor = 7 × 23 × 67 =
10,787
This list continues below...
... This list continues from above
composite factor = 19 × 1,171 =
22,249
composite factor = 23 × 1,171 =
26,933
composite factor = 19 × 23 × 67 =
29,279
composite factor = 67 × 1,171 =
78,457
composite factor = 7 × 19 × 1,171 =
155,743
composite factor = 7 × 23 × 1,171 =
188,531
composite factor = 7 × 19 × 23 × 67 =
204,953
composite factor = 19 × 23 × 1,171 =
511,727
composite factor = 7 × 67 × 1,171 =
549,199
composite factor = 19 × 67 × 1,171 =
1,490,683
composite factor = 23 × 67 × 1,171 =
1,804,511
composite factor = 7 × 19 × 23 × 1,171 =
3,582,089
composite factor = 7 × 19 × 67 × 1,171 =
10,434,781
composite factor = 7 × 23 × 67 × 1,171 =
12,631,577
composite factor = 19 × 23 × 67 × 1,171 =
34,285,709
composite factor = 7 × 19 × 23 × 67 × 1,171 =
239,999,963
32 factors (divisors)
What times what is 239,999,963?
What number multiplied by what number equals 239,999,963?
All the combinations of any two natural numbers whose product equals 239,999,963.
1 × 239,999,963 = 239,999,963
7 × 34,285,709 = 239,999,963
19 × 12,631,577 = 239,999,963
23 × 10,434,781 = 239,999,963
67 × 3,582,089 = 239,999,963
133 × 1,804,511 = 239,999,963
161 × 1,490,683 = 239,999,963
437 × 549,199 = 239,999,963
469 × 511,727 = 239,999,963
1,171 × 204,953 = 239,999,963
1,273 × 188,531 = 239,999,963
1,541 × 155,743 = 239,999,963
3,059 × 78,457 = 239,999,963
8,197 × 29,279 = 239,999,963
8,911 × 26,933 = 239,999,963
10,787 × 22,249 = 239,999,963
16 unique multiplications The final answer:
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