To find all the divisors of the number 548,912:
- 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 548,912:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
548,912 = 24 × 7 × 132 × 29
548,912 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) × (1 + 1) × (2 + 1) × (1 + 1) = 5 × 2 × 3 × 2 = 60
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 548,912
- 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
composite factor = 2
2 =
4
prime factor =
7
composite factor = 2
3 =
8
prime factor =
13
composite factor = 2 × 7 =
14
composite factor = 2
4 =
16
composite factor = 2 × 13 =
26
composite factor = 2
2 × 7 =
28
prime factor =
29
composite factor = 2
2 × 13 =
52
composite factor = 2
3 × 7 =
56
composite factor = 2 × 29 =
58
composite factor = 7 × 13 =
91
composite factor = 2
3 × 13 =
104
composite factor = 2
4 × 7 =
112
composite factor = 2
2 × 29 =
116
composite factor = 13
2 =
169
composite factor = 2 × 7 × 13 =
182
composite factor = 7 × 29 =
203
composite factor = 2
4 × 13 =
208
composite factor = 2
3 × 29 =
232
composite factor = 2 × 13
2 =
338
composite factor = 2
2 × 7 × 13 =
364
composite factor = 13 × 29 =
377
composite factor = 2 × 7 × 29 =
406
composite factor = 2
4 × 29 =
464
composite factor = 2
2 × 13
2 =
676
composite factor = 2
3 × 7 × 13 =
728
This list continues below...
... This list continues from above
composite factor = 2 × 13 × 29 =
754
composite factor = 2
2 × 7 × 29 =
812
composite factor = 7 × 13
2 =
1,183
composite factor = 2
3 × 13
2 =
1,352
composite factor = 2
4 × 7 × 13 =
1,456
composite factor = 2
2 × 13 × 29 =
1,508
composite factor = 2
3 × 7 × 29 =
1,624
composite factor = 2 × 7 × 13
2 =
2,366
composite factor = 7 × 13 × 29 =
2,639
composite factor = 2
4 × 13
2 =
2,704
composite factor = 2
3 × 13 × 29 =
3,016
composite factor = 2
4 × 7 × 29 =
3,248
composite factor = 2
2 × 7 × 13
2 =
4,732
composite factor = 13
2 × 29 =
4,901
composite factor = 2 × 7 × 13 × 29 =
5,278
composite factor = 2
4 × 13 × 29 =
6,032
composite factor = 2
3 × 7 × 13
2 =
9,464
composite factor = 2 × 13
2 × 29 =
9,802
composite factor = 2
2 × 7 × 13 × 29 =
10,556
composite factor = 2
4 × 7 × 13
2 =
18,928
composite factor = 2
2 × 13
2 × 29 =
19,604
composite factor = 2
3 × 7 × 13 × 29 =
21,112
composite factor = 7 × 13
2 × 29 =
34,307
composite factor = 2
3 × 13
2 × 29 =
39,208
composite factor = 2
4 × 7 × 13 × 29 =
42,224
composite factor = 2 × 7 × 13
2 × 29 =
68,614
composite factor = 2
4 × 13
2 × 29 =
78,416
composite factor = 2
2 × 7 × 13
2 × 29 =
137,228
composite factor = 2
3 × 7 × 13
2 × 29 =
274,456
composite factor = 2
4 × 7 × 13
2 × 29 =
548,912
60 factors (divisors)
What times what is 548,912?
What number multiplied by what number equals 548,912?
All the combinations of any two natural numbers whose product equals 548,912.
1 × 548,912 = 548,912
2 × 274,456 = 548,912
4 × 137,228 = 548,912
7 × 78,416 = 548,912
8 × 68,614 = 548,912
13 × 42,224 = 548,912
14 × 39,208 = 548,912
16 × 34,307 = 548,912
26 × 21,112 = 548,912
28 × 19,604 = 548,912
29 × 18,928 = 548,912
52 × 10,556 = 548,912
56 × 9,802 = 548,912
58 × 9,464 = 548,912
91 × 6,032 = 548,912
104 × 5,278 = 548,912
112 × 4,901 = 548,912
116 × 4,732 = 548,912
169 × 3,248 = 548,912
182 × 3,016 = 548,912
203 × 2,704 = 548,912
208 × 2,639 = 548,912
232 × 2,366 = 548,912
338 × 1,624 = 548,912
364 × 1,508 = 548,912
377 × 1,456 = 548,912
406 × 1,352 = 548,912
464 × 1,183 = 548,912
676 × 812 = 548,912
728 × 754 = 548,912
30 unique multiplications The final answer:
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