To find all the divisors of the number 355,200:
- 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 355,200:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
355,200 = 27 × 3 × 52 × 37
355,200 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 = (7 + 1) × (1 + 1) × (2 + 1) × (1 + 1) = 8 × 2 × 3 × 2 = 96
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 355,200
- 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
5 =
32
prime factor =
37
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 = 2
6 =
64
composite factor = 2 × 37 =
74
composite factor = 3 × 5
2 =
75
composite factor = 2
4 × 5 =
80
composite factor = 2
5 × 3 =
96
composite factor = 2
2 × 5
2 =
100
composite factor = 3 × 37 =
111
composite factor = 2
3 × 3 × 5 =
120
composite factor = 2
7 =
128
composite factor = 2
2 × 37 =
148
composite factor = 2 × 3 × 5
2 =
150
composite factor = 2
5 × 5 =
160
composite factor = 5 × 37 =
185
composite factor = 2
6 × 3 =
192
composite factor = 2
3 × 5
2 =
200
composite factor = 2 × 3 × 37 =
222
composite factor = 2
4 × 3 × 5 =
240
composite factor = 2
3 × 37 =
296
composite factor = 2
2 × 3 × 5
2 =
300
composite factor = 2
6 × 5 =
320
composite factor = 2 × 5 × 37 =
370
composite factor = 2
7 × 3 =
384
composite factor = 2
4 × 5
2 =
400
composite factor = 2
2 × 3 × 37 =
444
composite factor = 2
5 × 3 × 5 =
480
composite factor = 3 × 5 × 37 =
555
composite factor = 2
4 × 37 =
592
This list continues below...
... This list continues from above
composite factor = 2
3 × 3 × 5
2 =
600
composite factor = 2
7 × 5 =
640
composite factor = 2
2 × 5 × 37 =
740
composite factor = 2
5 × 5
2 =
800
composite factor = 2
3 × 3 × 37 =
888
composite factor = 5
2 × 37 =
925
composite factor = 2
6 × 3 × 5 =
960
composite factor = 2 × 3 × 5 × 37 =
1,110
composite factor = 2
5 × 37 =
1,184
composite factor = 2
4 × 3 × 5
2 =
1,200
composite factor = 2
3 × 5 × 37 =
1,480
composite factor = 2
6 × 5
2 =
1,600
composite factor = 2
4 × 3 × 37 =
1,776
composite factor = 2 × 5
2 × 37 =
1,850
composite factor = 2
7 × 3 × 5 =
1,920
composite factor = 2
2 × 3 × 5 × 37 =
2,220
composite factor = 2
6 × 37 =
2,368
composite factor = 2
5 × 3 × 5
2 =
2,400
composite factor = 3 × 5
2 × 37 =
2,775
composite factor = 2
4 × 5 × 37 =
2,960
composite factor = 2
7 × 5
2 =
3,200
composite factor = 2
5 × 3 × 37 =
3,552
composite factor = 2
2 × 5
2 × 37 =
3,700
composite factor = 2
3 × 3 × 5 × 37 =
4,440
composite factor = 2
7 × 37 =
4,736
composite factor = 2
6 × 3 × 5
2 =
4,800
composite factor = 2 × 3 × 5
2 × 37 =
5,550
composite factor = 2
5 × 5 × 37 =
5,920
composite factor = 2
6 × 3 × 37 =
7,104
composite factor = 2
3 × 5
2 × 37 =
7,400
composite factor = 2
4 × 3 × 5 × 37 =
8,880
composite factor = 2
7 × 3 × 5
2 =
9,600
composite factor = 2
2 × 3 × 5
2 × 37 =
11,100
composite factor = 2
6 × 5 × 37 =
11,840
composite factor = 2
7 × 3 × 37 =
14,208
composite factor = 2
4 × 5
2 × 37 =
14,800
composite factor = 2
5 × 3 × 5 × 37 =
17,760
composite factor = 2
3 × 3 × 5
2 × 37 =
22,200
composite factor = 2
7 × 5 × 37 =
23,680
composite factor = 2
5 × 5
2 × 37 =
29,600
composite factor = 2
6 × 3 × 5 × 37 =
35,520
composite factor = 2
4 × 3 × 5
2 × 37 =
44,400
composite factor = 2
6 × 5
2 × 37 =
59,200
composite factor = 2
7 × 3 × 5 × 37 =
71,040
composite factor = 2
5 × 3 × 5
2 × 37 =
88,800
composite factor = 2
7 × 5
2 × 37 =
118,400
composite factor = 2
6 × 3 × 5
2 × 37 =
177,600
composite factor = 2
7 × 3 × 5
2 × 37 =
355,200
96 factors (divisors)
What times what is 355,200?
What number multiplied by what number equals 355,200?
All the combinations of any two natural numbers whose product equals 355,200.
1 × 355,200 = 355,200
2 × 177,600 = 355,200
3 × 118,400 = 355,200
4 × 88,800 = 355,200
5 × 71,040 = 355,200
6 × 59,200 = 355,200
8 × 44,400 = 355,200
10 × 35,520 = 355,200
12 × 29,600 = 355,200
15 × 23,680 = 355,200
16 × 22,200 = 355,200
20 × 17,760 = 355,200
24 × 14,800 = 355,200
25 × 14,208 = 355,200
30 × 11,840 = 355,200
32 × 11,100 = 355,200
37 × 9,600 = 355,200
40 × 8,880 = 355,200
48 × 7,400 = 355,200
50 × 7,104 = 355,200
60 × 5,920 = 355,200
64 × 5,550 = 355,200
74 × 4,800 = 355,200
75 × 4,736 = 355,200
80 × 4,440 = 355,200
96 × 3,700 = 355,200
100 × 3,552 = 355,200
111 × 3,200 = 355,200
120 × 2,960 = 355,200
128 × 2,775 = 355,200
148 × 2,400 = 355,200
150 × 2,368 = 355,200
160 × 2,220 = 355,200
185 × 1,920 = 355,200
192 × 1,850 = 355,200
200 × 1,776 = 355,200
222 × 1,600 = 355,200
240 × 1,480 = 355,200
296 × 1,200 = 355,200
300 × 1,184 = 355,200
320 × 1,110 = 355,200
370 × 960 = 355,200
384 × 925 = 355,200
400 × 888 = 355,200
444 × 800 = 355,200
480 × 740 = 355,200
555 × 640 = 355,200
592 × 600 = 355,200
48 unique multiplications The final answer:
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