To find all the divisors of the number 793,200:
- 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 793,200:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
793,200 = 24 × 3 × 52 × 661
793,200 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 793,200
- 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
prime factor =
5
composite factor = 2 × 3 =
6
composite factor = 2
3 =
8
composite factor = 2 × 5 =
10
composite factor = 2
2 × 3 =
12
composite factor = 3 × 5 =
15
composite factor = 2
4 =
16
composite factor = 2
2 × 5 =
20
composite factor = 2
3 × 3 =
24
composite factor = 5
2 =
25
composite factor = 2 × 3 × 5 =
30
composite factor = 2
3 × 5 =
40
composite factor = 2
4 × 3 =
48
composite factor = 2 × 5
2 =
50
composite factor = 2
2 × 3 × 5 =
60
composite factor = 3 × 5
2 =
75
composite factor = 2
4 × 5 =
80
composite factor = 2
2 × 5
2 =
100
composite factor = 2
3 × 3 × 5 =
120
composite factor = 2 × 3 × 5
2 =
150
composite factor = 2
3 × 5
2 =
200
composite factor = 2
4 × 3 × 5 =
240
composite factor = 2
2 × 3 × 5
2 =
300
composite factor = 2
4 × 5
2 =
400
composite factor = 2
3 × 3 × 5
2 =
600
prime factor =
661
This list continues below...
... This list continues from above
composite factor = 2
4 × 3 × 5
2 =
1,200
composite factor = 2 × 661 =
1,322
composite factor = 3 × 661 =
1,983
composite factor = 2
2 × 661 =
2,644
composite factor = 5 × 661 =
3,305
composite factor = 2 × 3 × 661 =
3,966
composite factor = 2
3 × 661 =
5,288
composite factor = 2 × 5 × 661 =
6,610
composite factor = 2
2 × 3 × 661 =
7,932
composite factor = 3 × 5 × 661 =
9,915
composite factor = 2
4 × 661 =
10,576
composite factor = 2
2 × 5 × 661 =
13,220
composite factor = 2
3 × 3 × 661 =
15,864
composite factor = 5
2 × 661 =
16,525
composite factor = 2 × 3 × 5 × 661 =
19,830
composite factor = 2
3 × 5 × 661 =
26,440
composite factor = 2
4 × 3 × 661 =
31,728
composite factor = 2 × 5
2 × 661 =
33,050
composite factor = 2
2 × 3 × 5 × 661 =
39,660
composite factor = 3 × 5
2 × 661 =
49,575
composite factor = 2
4 × 5 × 661 =
52,880
composite factor = 2
2 × 5
2 × 661 =
66,100
composite factor = 2
3 × 3 × 5 × 661 =
79,320
composite factor = 2 × 3 × 5
2 × 661 =
99,150
composite factor = 2
3 × 5
2 × 661 =
132,200
composite factor = 2
4 × 3 × 5 × 661 =
158,640
composite factor = 2
2 × 3 × 5
2 × 661 =
198,300
composite factor = 2
4 × 5
2 × 661 =
264,400
composite factor = 2
3 × 3 × 5
2 × 661 =
396,600
composite factor = 2
4 × 3 × 5
2 × 661 =
793,200
60 factors (divisors)
What times what is 793,200?
What number multiplied by what number equals 793,200?
All the combinations of any two natural numbers whose product equals 793,200.
1 × 793,200 = 793,200
2 × 396,600 = 793,200
3 × 264,400 = 793,200
4 × 198,300 = 793,200
5 × 158,640 = 793,200
6 × 132,200 = 793,200
8 × 99,150 = 793,200
10 × 79,320 = 793,200
12 × 66,100 = 793,200
15 × 52,880 = 793,200
16 × 49,575 = 793,200
20 × 39,660 = 793,200
24 × 33,050 = 793,200
25 × 31,728 = 793,200
30 × 26,440 = 793,200
40 × 19,830 = 793,200
48 × 16,525 = 793,200
50 × 15,864 = 793,200
60 × 13,220 = 793,200
75 × 10,576 = 793,200
80 × 9,915 = 793,200
100 × 7,932 = 793,200
120 × 6,610 = 793,200
150 × 5,288 = 793,200
200 × 3,966 = 793,200
240 × 3,305 = 793,200
300 × 2,644 = 793,200
400 × 1,983 = 793,200
600 × 1,322 = 793,200
661 × 1,200 = 793,200
30 unique multiplications The final answer:
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