To find all the divisors of the number 50,400:
- 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 50,400:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
50,400 = 25 × 32 × 52 × 7
50,400 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 50,400
- 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
prime factor =
7
composite factor = 2
3 =
8
composite factor = 3
2 =
9
composite factor = 2 × 5 =
10
composite factor = 2
2 × 3 =
12
composite factor = 2 × 7 =
14
composite factor = 3 × 5 =
15
composite factor = 2
4 =
16
composite factor = 2 × 3
2 =
18
composite factor = 2
2 × 5 =
20
composite factor = 3 × 7 =
21
composite factor = 2
3 × 3 =
24
composite factor = 5
2 =
25
composite factor = 2
2 × 7 =
28
composite factor = 2 × 3 × 5 =
30
composite factor = 2
5 =
32
composite factor = 5 × 7 =
35
composite factor = 2
2 × 3
2 =
36
composite factor = 2
3 × 5 =
40
composite factor = 2 × 3 × 7 =
42
composite factor = 3
2 × 5 =
45
composite factor = 2
4 × 3 =
48
composite factor = 2 × 5
2 =
50
composite factor = 2
3 × 7 =
56
composite factor = 2
2 × 3 × 5 =
60
composite factor = 3
2 × 7 =
63
composite factor = 2 × 5 × 7 =
70
composite factor = 2
3 × 3
2 =
72
composite factor = 3 × 5
2 =
75
composite factor = 2
4 × 5 =
80
composite factor = 2
2 × 3 × 7 =
84
composite factor = 2 × 3
2 × 5 =
90
composite factor = 2
5 × 3 =
96
composite factor = 2
2 × 5
2 =
100
composite factor = 3 × 5 × 7 =
105
composite factor = 2
4 × 7 =
112
composite factor = 2
3 × 3 × 5 =
120
composite factor = 2 × 3
2 × 7 =
126
composite factor = 2
2 × 5 × 7 =
140
composite factor = 2
4 × 3
2 =
144
composite factor = 2 × 3 × 5
2 =
150
composite factor = 2
5 × 5 =
160
composite factor = 2
3 × 3 × 7 =
168
composite factor = 5
2 × 7 =
175
composite factor = 2
2 × 3
2 × 5 =
180
composite factor = 2
3 × 5
2 =
200
composite factor = 2 × 3 × 5 × 7 =
210
composite factor = 2
5 × 7 =
224
This list continues below...
... This list continues from above
composite factor = 3
2 × 5
2 =
225
composite factor = 2
4 × 3 × 5 =
240
composite factor = 2
2 × 3
2 × 7 =
252
composite factor = 2
3 × 5 × 7 =
280
composite factor = 2
5 × 3
2 =
288
composite factor = 2
2 × 3 × 5
2 =
300
composite factor = 3
2 × 5 × 7 =
315
composite factor = 2
4 × 3 × 7 =
336
composite factor = 2 × 5
2 × 7 =
350
composite factor = 2
3 × 3
2 × 5 =
360
composite factor = 2
4 × 5
2 =
400
composite factor = 2
2 × 3 × 5 × 7 =
420
composite factor = 2 × 3
2 × 5
2 =
450
composite factor = 2
5 × 3 × 5 =
480
composite factor = 2
3 × 3
2 × 7 =
504
composite factor = 3 × 5
2 × 7 =
525
composite factor = 2
4 × 5 × 7 =
560
composite factor = 2
3 × 3 × 5
2 =
600
composite factor = 2 × 3
2 × 5 × 7 =
630
composite factor = 2
5 × 3 × 7 =
672
composite factor = 2
2 × 5
2 × 7 =
700
composite factor = 2
4 × 3
2 × 5 =
720
composite factor = 2
5 × 5
2 =
800
composite factor = 2
3 × 3 × 5 × 7 =
840
composite factor = 2
2 × 3
2 × 5
2 =
900
composite factor = 2
4 × 3
2 × 7 =
1,008
composite factor = 2 × 3 × 5
2 × 7 =
1,050
composite factor = 2
5 × 5 × 7 =
1,120
composite factor = 2
4 × 3 × 5
2 =
1,200
composite factor = 2
2 × 3
2 × 5 × 7 =
1,260
composite factor = 2
3 × 5
2 × 7 =
1,400
composite factor = 2
5 × 3
2 × 5 =
1,440
composite factor = 3
2 × 5
2 × 7 =
1,575
composite factor = 2
4 × 3 × 5 × 7 =
1,680
composite factor = 2
3 × 3
2 × 5
2 =
1,800
composite factor = 2
5 × 3
2 × 7 =
2,016
composite factor = 2
2 × 3 × 5
2 × 7 =
2,100
composite factor = 2
5 × 3 × 5
2 =
2,400
composite factor = 2
3 × 3
2 × 5 × 7 =
2,520
composite factor = 2
4 × 5
2 × 7 =
2,800
composite factor = 2 × 3
2 × 5
2 × 7 =
3,150
composite factor = 2
5 × 3 × 5 × 7 =
3,360
composite factor = 2
4 × 3
2 × 5
2 =
3,600
composite factor = 2
3 × 3 × 5
2 × 7 =
4,200
composite factor = 2
4 × 3
2 × 5 × 7 =
5,040
composite factor = 2
5 × 5
2 × 7 =
5,600
composite factor = 2
2 × 3
2 × 5
2 × 7 =
6,300
composite factor = 2
5 × 3
2 × 5
2 =
7,200
composite factor = 2
4 × 3 × 5
2 × 7 =
8,400
composite factor = 2
5 × 3
2 × 5 × 7 =
10,080
composite factor = 2
3 × 3
2 × 5
2 × 7 =
12,600
composite factor = 2
5 × 3 × 5
2 × 7 =
16,800
composite factor = 2
4 × 3
2 × 5
2 × 7 =
25,200
composite factor = 2
5 × 3
2 × 5
2 × 7 =
50,400
108 factors (divisors)
What times what is 50,400?
What number multiplied by what number equals 50,400?
All the combinations of any two natural numbers whose product equals 50,400.
1 × 50,400 = 50,400
2 × 25,200 = 50,400
3 × 16,800 = 50,400
4 × 12,600 = 50,400
5 × 10,080 = 50,400
6 × 8,400 = 50,400
7 × 7,200 = 50,400
8 × 6,300 = 50,400
9 × 5,600 = 50,400
10 × 5,040 = 50,400
12 × 4,200 = 50,400
14 × 3,600 = 50,400
15 × 3,360 = 50,400
16 × 3,150 = 50,400
18 × 2,800 = 50,400
20 × 2,520 = 50,400
21 × 2,400 = 50,400
24 × 2,100 = 50,400
25 × 2,016 = 50,400
28 × 1,800 = 50,400
30 × 1,680 = 50,400
32 × 1,575 = 50,400
35 × 1,440 = 50,400
36 × 1,400 = 50,400
40 × 1,260 = 50,400
42 × 1,200 = 50,400
45 × 1,120 = 50,400
48 × 1,050 = 50,400
50 × 1,008 = 50,400
56 × 900 = 50,400
60 × 840 = 50,400
63 × 800 = 50,400
70 × 720 = 50,400
72 × 700 = 50,400
75 × 672 = 50,400
80 × 630 = 50,400
84 × 600 = 50,400
90 × 560 = 50,400
96 × 525 = 50,400
100 × 504 = 50,400
105 × 480 = 50,400
112 × 450 = 50,400
120 × 420 = 50,400
126 × 400 = 50,400
140 × 360 = 50,400
144 × 350 = 50,400
150 × 336 = 50,400
160 × 315 = 50,400
168 × 300 = 50,400
175 × 288 = 50,400
180 × 280 = 50,400
200 × 252 = 50,400
210 × 240 = 50,400
224 × 225 = 50,400
54 unique multiplications The final answer:
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