To find all the divisors of the number 439,200:
- 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 439,200:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
439,200 = 25 × 32 × 52 × 61
439,200 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 = (5 + 1) × (2 + 1) × (2 + 1) × (1 + 1) = 6 × 3 × 3 × 2 = 108
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 439,200
- 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 = 3
2 =
9
composite factor = 2 × 5 =
10
composite factor = 2
2 × 3 =
12
composite factor = 3 × 5 =
15
composite factor = 2
4 =
16
composite factor = 2 × 3
2 =
18
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
5 =
32
composite factor = 2
2 × 3
2 =
36
composite factor = 2
3 × 5 =
40
composite factor = 3
2 × 5 =
45
composite factor = 2
4 × 3 =
48
composite factor = 2 × 5
2 =
50
composite factor = 2
2 × 3 × 5 =
60
prime factor =
61
composite factor = 2
3 × 3
2 =
72
composite factor = 3 × 5
2 =
75
composite factor = 2
4 × 5 =
80
composite factor = 2 × 3
2 × 5 =
90
composite factor = 2
5 × 3 =
96
composite factor = 2
2 × 5
2 =
100
composite factor = 2
3 × 3 × 5 =
120
composite factor = 2 × 61 =
122
composite factor = 2
4 × 3
2 =
144
composite factor = 2 × 3 × 5
2 =
150
composite factor = 2
5 × 5 =
160
composite factor = 2
2 × 3
2 × 5 =
180
composite factor = 3 × 61 =
183
composite factor = 2
3 × 5
2 =
200
composite factor = 3
2 × 5
2 =
225
composite factor = 2
4 × 3 × 5 =
240
composite factor = 2
2 × 61 =
244
composite factor = 2
5 × 3
2 =
288
composite factor = 2
2 × 3 × 5
2 =
300
composite factor = 5 × 61 =
305
composite factor = 2
3 × 3
2 × 5 =
360
composite factor = 2 × 3 × 61 =
366
composite factor = 2
4 × 5
2 =
400
composite factor = 2 × 3
2 × 5
2 =
450
composite factor = 2
5 × 3 × 5 =
480
composite factor = 2
3 × 61 =
488
composite factor = 3
2 × 61 =
549
composite factor = 2
3 × 3 × 5
2 =
600
composite factor = 2 × 5 × 61 =
610
This list continues below...
... This list continues from above
composite factor = 2
4 × 3
2 × 5 =
720
composite factor = 2
2 × 3 × 61 =
732
composite factor = 2
5 × 5
2 =
800
composite factor = 2
2 × 3
2 × 5
2 =
900
composite factor = 3 × 5 × 61 =
915
composite factor = 2
4 × 61 =
976
composite factor = 2 × 3
2 × 61 =
1,098
composite factor = 2
4 × 3 × 5
2 =
1,200
composite factor = 2
2 × 5 × 61 =
1,220
composite factor = 2
5 × 3
2 × 5 =
1,440
composite factor = 2
3 × 3 × 61 =
1,464
composite factor = 5
2 × 61 =
1,525
composite factor = 2
3 × 3
2 × 5
2 =
1,800
composite factor = 2 × 3 × 5 × 61 =
1,830
composite factor = 2
5 × 61 =
1,952
composite factor = 2
2 × 3
2 × 61 =
2,196
composite factor = 2
5 × 3 × 5
2 =
2,400
composite factor = 2
3 × 5 × 61 =
2,440
composite factor = 3
2 × 5 × 61 =
2,745
composite factor = 2
4 × 3 × 61 =
2,928
composite factor = 2 × 5
2 × 61 =
3,050
composite factor = 2
4 × 3
2 × 5
2 =
3,600
composite factor = 2
2 × 3 × 5 × 61 =
3,660
composite factor = 2
3 × 3
2 × 61 =
4,392
composite factor = 3 × 5
2 × 61 =
4,575
composite factor = 2
4 × 5 × 61 =
4,880
composite factor = 2 × 3
2 × 5 × 61 =
5,490
composite factor = 2
5 × 3 × 61 =
5,856
composite factor = 2
2 × 5
2 × 61 =
6,100
composite factor = 2
5 × 3
2 × 5
2 =
7,200
composite factor = 2
3 × 3 × 5 × 61 =
7,320
composite factor = 2
4 × 3
2 × 61 =
8,784
composite factor = 2 × 3 × 5
2 × 61 =
9,150
composite factor = 2
5 × 5 × 61 =
9,760
composite factor = 2
2 × 3
2 × 5 × 61 =
10,980
composite factor = 2
3 × 5
2 × 61 =
12,200
composite factor = 3
2 × 5
2 × 61 =
13,725
composite factor = 2
4 × 3 × 5 × 61 =
14,640
composite factor = 2
5 × 3
2 × 61 =
17,568
composite factor = 2
2 × 3 × 5
2 × 61 =
18,300
composite factor = 2
3 × 3
2 × 5 × 61 =
21,960
composite factor = 2
4 × 5
2 × 61 =
24,400
composite factor = 2 × 3
2 × 5
2 × 61 =
27,450
composite factor = 2
5 × 3 × 5 × 61 =
29,280
composite factor = 2
3 × 3 × 5
2 × 61 =
36,600
composite factor = 2
4 × 3
2 × 5 × 61 =
43,920
composite factor = 2
5 × 5
2 × 61 =
48,800
composite factor = 2
2 × 3
2 × 5
2 × 61 =
54,900
composite factor = 2
4 × 3 × 5
2 × 61 =
73,200
composite factor = 2
5 × 3
2 × 5 × 61 =
87,840
composite factor = 2
3 × 3
2 × 5
2 × 61 =
109,800
composite factor = 2
5 × 3 × 5
2 × 61 =
146,400
composite factor = 2
4 × 3
2 × 5
2 × 61 =
219,600
composite factor = 2
5 × 3
2 × 5
2 × 61 =
439,200
108 factors (divisors)
What times what is 439,200?
What number multiplied by what number equals 439,200?
All the combinations of any two natural numbers whose product equals 439,200.
1 × 439,200 = 439,200
2 × 219,600 = 439,200
3 × 146,400 = 439,200
4 × 109,800 = 439,200
5 × 87,840 = 439,200
6 × 73,200 = 439,200
8 × 54,900 = 439,200
9 × 48,800 = 439,200
10 × 43,920 = 439,200
12 × 36,600 = 439,200
15 × 29,280 = 439,200
16 × 27,450 = 439,200
18 × 24,400 = 439,200
20 × 21,960 = 439,200
24 × 18,300 = 439,200
25 × 17,568 = 439,200
30 × 14,640 = 439,200
32 × 13,725 = 439,200
36 × 12,200 = 439,200
40 × 10,980 = 439,200
45 × 9,760 = 439,200
48 × 9,150 = 439,200
50 × 8,784 = 439,200
60 × 7,320 = 439,200
61 × 7,200 = 439,200
72 × 6,100 = 439,200
75 × 5,856 = 439,200
80 × 5,490 = 439,200
90 × 4,880 = 439,200
96 × 4,575 = 439,200
100 × 4,392 = 439,200
120 × 3,660 = 439,200
122 × 3,600 = 439,200
144 × 3,050 = 439,200
150 × 2,928 = 439,200
160 × 2,745 = 439,200
180 × 2,440 = 439,200
183 × 2,400 = 439,200
200 × 2,196 = 439,200
225 × 1,952 = 439,200
240 × 1,830 = 439,200
244 × 1,800 = 439,200
288 × 1,525 = 439,200
300 × 1,464 = 439,200
305 × 1,440 = 439,200
360 × 1,220 = 439,200
366 × 1,200 = 439,200
400 × 1,098 = 439,200
450 × 976 = 439,200
480 × 915 = 439,200
488 × 900 = 439,200
549 × 800 = 439,200
600 × 732 = 439,200
610 × 720 = 439,200
54 unique multiplications The final answer:
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