To find all the divisors of the number 49,392:
- 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 49,392:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
49,392 = 24 × 32 × 73
49,392 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 = (4 + 1) × (2 + 1) × (3 + 1) = 5 × 3 × 4 = 60
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 49,392
- 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
2 =
4
composite factor = 2 × 3 =
6
prime factor =
7
composite factor = 2
3 =
8
composite factor = 3
2 =
9
composite factor = 2
2 × 3 =
12
composite factor = 2 × 7 =
14
composite factor = 2
4 =
16
composite factor = 2 × 3
2 =
18
composite factor = 3 × 7 =
21
composite factor = 2
3 × 3 =
24
composite factor = 2
2 × 7 =
28
composite factor = 2
2 × 3
2 =
36
composite factor = 2 × 3 × 7 =
42
composite factor = 2
4 × 3 =
48
composite factor = 7
2 =
49
composite factor = 2
3 × 7 =
56
composite factor = 3
2 × 7 =
63
composite factor = 2
3 × 3
2 =
72
composite factor = 2
2 × 3 × 7 =
84
composite factor = 2 × 7
2 =
98
composite factor = 2
4 × 7 =
112
composite factor = 2 × 3
2 × 7 =
126
composite factor = 2
4 × 3
2 =
144
composite factor = 3 × 7
2 =
147
composite factor = 2
3 × 3 × 7 =
168
composite factor = 2
2 × 7
2 =
196
This list continues below...
... This list continues from above
composite factor = 2
2 × 3
2 × 7 =
252
composite factor = 2 × 3 × 7
2 =
294
composite factor = 2
4 × 3 × 7 =
336
composite factor = 7
3 =
343
composite factor = 2
3 × 7
2 =
392
composite factor = 3
2 × 7
2 =
441
composite factor = 2
3 × 3
2 × 7 =
504
composite factor = 2
2 × 3 × 7
2 =
588
composite factor = 2 × 7
3 =
686
composite factor = 2
4 × 7
2 =
784
composite factor = 2 × 3
2 × 7
2 =
882
composite factor = 2
4 × 3
2 × 7 =
1,008
composite factor = 3 × 7
3 =
1,029
composite factor = 2
3 × 3 × 7
2 =
1,176
composite factor = 2
2 × 7
3 =
1,372
composite factor = 2
2 × 3
2 × 7
2 =
1,764
composite factor = 2 × 3 × 7
3 =
2,058
composite factor = 2
4 × 3 × 7
2 =
2,352
composite factor = 2
3 × 7
3 =
2,744
composite factor = 3
2 × 7
3 =
3,087
composite factor = 2
3 × 3
2 × 7
2 =
3,528
composite factor = 2
2 × 3 × 7
3 =
4,116
composite factor = 2
4 × 7
3 =
5,488
composite factor = 2 × 3
2 × 7
3 =
6,174
composite factor = 2
4 × 3
2 × 7
2 =
7,056
composite factor = 2
3 × 3 × 7
3 =
8,232
composite factor = 2
2 × 3
2 × 7
3 =
12,348
composite factor = 2
4 × 3 × 7
3 =
16,464
composite factor = 2
3 × 3
2 × 7
3 =
24,696
composite factor = 2
4 × 3
2 × 7
3 =
49,392
60 factors (divisors)
What times what is 49,392?
What number multiplied by what number equals 49,392?
All the combinations of any two natural numbers whose product equals 49,392.
1 × 49,392 = 49,392
2 × 24,696 = 49,392
3 × 16,464 = 49,392
4 × 12,348 = 49,392
6 × 8,232 = 49,392
7 × 7,056 = 49,392
8 × 6,174 = 49,392
9 × 5,488 = 49,392
12 × 4,116 = 49,392
14 × 3,528 = 49,392
16 × 3,087 = 49,392
18 × 2,744 = 49,392
21 × 2,352 = 49,392
24 × 2,058 = 49,392
28 × 1,764 = 49,392
36 × 1,372 = 49,392
42 × 1,176 = 49,392
48 × 1,029 = 49,392
49 × 1,008 = 49,392
56 × 882 = 49,392
63 × 784 = 49,392
72 × 686 = 49,392
84 × 588 = 49,392
98 × 504 = 49,392
112 × 441 = 49,392
126 × 392 = 49,392
144 × 343 = 49,392
147 × 336 = 49,392
168 × 294 = 49,392
196 × 252 = 49,392
30 unique multiplications The final answer:
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