To find all the divisors of the number 38,928,967:
- 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 38,928,967:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
38,928,967 = 7 × 112 × 19 × 41 × 59
38,928,967 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 38,928,967
- 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 =
7
prime factor =
11
prime factor =
19
prime factor =
41
prime factor =
59
composite factor = 7 × 11 =
77
composite factor = 11
2 =
121
composite factor = 7 × 19 =
133
composite factor = 11 × 19 =
209
composite factor = 7 × 41 =
287
composite factor = 7 × 59 =
413
composite factor = 11 × 41 =
451
composite factor = 11 × 59 =
649
composite factor = 19 × 41 =
779
composite factor = 7 × 11
2 =
847
composite factor = 19 × 59 =
1,121
composite factor = 7 × 11 × 19 =
1,463
composite factor = 11
2 × 19 =
2,299
composite factor = 41 × 59 =
2,419
composite factor = 7 × 11 × 41 =
3,157
composite factor = 7 × 11 × 59 =
4,543
composite factor = 11
2 × 41 =
4,961
composite factor = 7 × 19 × 41 =
5,453
This list continues below...
... This list continues from above
composite factor = 11
2 × 59 =
7,139
composite factor = 7 × 19 × 59 =
7,847
composite factor = 11 × 19 × 41 =
8,569
composite factor = 11 × 19 × 59 =
12,331
composite factor = 7 × 11
2 × 19 =
16,093
composite factor = 7 × 41 × 59 =
16,933
composite factor = 11 × 41 × 59 =
26,609
composite factor = 7 × 11
2 × 41 =
34,727
composite factor = 19 × 41 × 59 =
45,961
composite factor = 7 × 11
2 × 59 =
49,973
composite factor = 7 × 11 × 19 × 41 =
59,983
composite factor = 7 × 11 × 19 × 59 =
86,317
composite factor = 11
2 × 19 × 41 =
94,259
composite factor = 11
2 × 19 × 59 =
135,641
composite factor = 7 × 11 × 41 × 59 =
186,263
composite factor = 11
2 × 41 × 59 =
292,699
composite factor = 7 × 19 × 41 × 59 =
321,727
composite factor = 11 × 19 × 41 × 59 =
505,571
composite factor = 7 × 11
2 × 19 × 41 =
659,813
composite factor = 7 × 11
2 × 19 × 59 =
949,487
composite factor = 7 × 11
2 × 41 × 59 =
2,048,893
composite factor = 7 × 11 × 19 × 41 × 59 =
3,538,997
composite factor = 11
2 × 19 × 41 × 59 =
5,561,281
composite factor = 7 × 11
2 × 19 × 41 × 59 =
38,928,967
48 factors (divisors)
What times what is 38,928,967?
What number multiplied by what number equals 38,928,967?
All the combinations of any two natural numbers whose product equals 38,928,967.
1 × 38,928,967 = 38,928,967
7 × 5,561,281 = 38,928,967
11 × 3,538,997 = 38,928,967
19 × 2,048,893 = 38,928,967
41 × 949,487 = 38,928,967
59 × 659,813 = 38,928,967
77 × 505,571 = 38,928,967
121 × 321,727 = 38,928,967
133 × 292,699 = 38,928,967
209 × 186,263 = 38,928,967
287 × 135,641 = 38,928,967
413 × 94,259 = 38,928,967
451 × 86,317 = 38,928,967
649 × 59,983 = 38,928,967
779 × 49,973 = 38,928,967
847 × 45,961 = 38,928,967
1,121 × 34,727 = 38,928,967
1,463 × 26,609 = 38,928,967
2,299 × 16,933 = 38,928,967
2,419 × 16,093 = 38,928,967
3,157 × 12,331 = 38,928,967
4,543 × 8,569 = 38,928,967
4,961 × 7,847 = 38,928,967
5,453 × 7,139 = 38,928,967
24 unique multiplications The final answer:
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