To find all the divisors of the number 961,200:
- 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 961,200:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
961,200 = 24 × 33 × 52 × 89
961,200 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) × (3 + 1) × (2 + 1) × (1 + 1) = 5 × 4 × 3 × 2 = 120
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 961,200
- 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 = 3
3 =
27
composite factor = 2 × 3 × 5 =
30
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 × 3
3 =
54
composite factor = 2
2 × 3 × 5 =
60
composite factor = 2
3 × 3
2 =
72
composite factor = 3 × 5
2 =
75
composite factor = 2
4 × 5 =
80
prime factor =
89
composite factor = 2 × 3
2 × 5 =
90
composite factor = 2
2 × 5
2 =
100
composite factor = 2
2 × 3
3 =
108
composite factor = 2
3 × 3 × 5 =
120
composite factor = 3
3 × 5 =
135
composite factor = 2
4 × 3
2 =
144
composite factor = 2 × 3 × 5
2 =
150
composite factor = 2 × 89 =
178
composite factor = 2
2 × 3
2 × 5 =
180
composite factor = 2
3 × 5
2 =
200
composite factor = 2
3 × 3
3 =
216
composite factor = 3
2 × 5
2 =
225
composite factor = 2
4 × 3 × 5 =
240
composite factor = 3 × 89 =
267
composite factor = 2 × 3
3 × 5 =
270
composite factor = 2
2 × 3 × 5
2 =
300
composite factor = 2
2 × 89 =
356
composite factor = 2
3 × 3
2 × 5 =
360
composite factor = 2
4 × 5
2 =
400
composite factor = 2
4 × 3
3 =
432
composite factor = 5 × 89 =
445
composite factor = 2 × 3
2 × 5
2 =
450
composite factor = 2 × 3 × 89 =
534
composite factor = 2
2 × 3
3 × 5 =
540
composite factor = 2
3 × 3 × 5
2 =
600
composite factor = 3
3 × 5
2 =
675
composite factor = 2
3 × 89 =
712
composite factor = 2
4 × 3
2 × 5 =
720
composite factor = 3
2 × 89 =
801
composite factor = 2 × 5 × 89 =
890
composite factor = 2
2 × 3
2 × 5
2 =
900
This list continues below...
... This list continues from above
composite factor = 2
2 × 3 × 89 =
1,068
composite factor = 2
3 × 3
3 × 5 =
1,080
composite factor = 2
4 × 3 × 5
2 =
1,200
composite factor = 3 × 5 × 89 =
1,335
composite factor = 2 × 3
3 × 5
2 =
1,350
composite factor = 2
4 × 89 =
1,424
composite factor = 2 × 3
2 × 89 =
1,602
composite factor = 2
2 × 5 × 89 =
1,780
composite factor = 2
3 × 3
2 × 5
2 =
1,800
composite factor = 2
3 × 3 × 89 =
2,136
composite factor = 2
4 × 3
3 × 5 =
2,160
composite factor = 5
2 × 89 =
2,225
composite factor = 3
3 × 89 =
2,403
composite factor = 2 × 3 × 5 × 89 =
2,670
composite factor = 2
2 × 3
3 × 5
2 =
2,700
composite factor = 2
2 × 3
2 × 89 =
3,204
composite factor = 2
3 × 5 × 89 =
3,560
composite factor = 2
4 × 3
2 × 5
2 =
3,600
composite factor = 3
2 × 5 × 89 =
4,005
composite factor = 2
4 × 3 × 89 =
4,272
composite factor = 2 × 5
2 × 89 =
4,450
composite factor = 2 × 3
3 × 89 =
4,806
composite factor = 2
2 × 3 × 5 × 89 =
5,340
composite factor = 2
3 × 3
3 × 5
2 =
5,400
composite factor = 2
3 × 3
2 × 89 =
6,408
composite factor = 3 × 5
2 × 89 =
6,675
composite factor = 2
4 × 5 × 89 =
7,120
composite factor = 2 × 3
2 × 5 × 89 =
8,010
composite factor = 2
2 × 5
2 × 89 =
8,900
composite factor = 2
2 × 3
3 × 89 =
9,612
composite factor = 2
3 × 3 × 5 × 89 =
10,680
composite factor = 2
4 × 3
3 × 5
2 =
10,800
composite factor = 3
3 × 5 × 89 =
12,015
composite factor = 2
4 × 3
2 × 89 =
12,816
composite factor = 2 × 3 × 5
2 × 89 =
13,350
composite factor = 2
2 × 3
2 × 5 × 89 =
16,020
composite factor = 2
3 × 5
2 × 89 =
17,800
composite factor = 2
3 × 3
3 × 89 =
19,224
composite factor = 3
2 × 5
2 × 89 =
20,025
composite factor = 2
4 × 3 × 5 × 89 =
21,360
composite factor = 2 × 3
3 × 5 × 89 =
24,030
composite factor = 2
2 × 3 × 5
2 × 89 =
26,700
composite factor = 2
3 × 3
2 × 5 × 89 =
32,040
composite factor = 2
4 × 5
2 × 89 =
35,600
composite factor = 2
4 × 3
3 × 89 =
38,448
composite factor = 2 × 3
2 × 5
2 × 89 =
40,050
composite factor = 2
2 × 3
3 × 5 × 89 =
48,060
composite factor = 2
3 × 3 × 5
2 × 89 =
53,400
composite factor = 3
3 × 5
2 × 89 =
60,075
composite factor = 2
4 × 3
2 × 5 × 89 =
64,080
composite factor = 2
2 × 3
2 × 5
2 × 89 =
80,100
composite factor = 2
3 × 3
3 × 5 × 89 =
96,120
composite factor = 2
4 × 3 × 5
2 × 89 =
106,800
composite factor = 2 × 3
3 × 5
2 × 89 =
120,150
composite factor = 2
3 × 3
2 × 5
2 × 89 =
160,200
composite factor = 2
4 × 3
3 × 5 × 89 =
192,240
composite factor = 2
2 × 3
3 × 5
2 × 89 =
240,300
composite factor = 2
4 × 3
2 × 5
2 × 89 =
320,400
composite factor = 2
3 × 3
3 × 5
2 × 89 =
480,600
composite factor = 2
4 × 3
3 × 5
2 × 89 =
961,200
120 factors (divisors)
What times what is 961,200?
What number multiplied by what number equals 961,200?
All the combinations of any two natural numbers whose product equals 961,200.
1 × 961,200 = 961,200
2 × 480,600 = 961,200
3 × 320,400 = 961,200
4 × 240,300 = 961,200
5 × 192,240 = 961,200
6 × 160,200 = 961,200
8 × 120,150 = 961,200
9 × 106,800 = 961,200
10 × 96,120 = 961,200
12 × 80,100 = 961,200
15 × 64,080 = 961,200
16 × 60,075 = 961,200
18 × 53,400 = 961,200
20 × 48,060 = 961,200
24 × 40,050 = 961,200
25 × 38,448 = 961,200
27 × 35,600 = 961,200
30 × 32,040 = 961,200
36 × 26,700 = 961,200
40 × 24,030 = 961,200
45 × 21,360 = 961,200
48 × 20,025 = 961,200
50 × 19,224 = 961,200
54 × 17,800 = 961,200
60 × 16,020 = 961,200
72 × 13,350 = 961,200
75 × 12,816 = 961,200
80 × 12,015 = 961,200
89 × 10,800 = 961,200
90 × 10,680 = 961,200
100 × 9,612 = 961,200
108 × 8,900 = 961,200
120 × 8,010 = 961,200
135 × 7,120 = 961,200
144 × 6,675 = 961,200
150 × 6,408 = 961,200
178 × 5,400 = 961,200
180 × 5,340 = 961,200
200 × 4,806 = 961,200
216 × 4,450 = 961,200
225 × 4,272 = 961,200
240 × 4,005 = 961,200
267 × 3,600 = 961,200
270 × 3,560 = 961,200
300 × 3,204 = 961,200
356 × 2,700 = 961,200
360 × 2,670 = 961,200
400 × 2,403 = 961,200
432 × 2,225 = 961,200
445 × 2,160 = 961,200
450 × 2,136 = 961,200
534 × 1,800 = 961,200
540 × 1,780 = 961,200
600 × 1,602 = 961,200
675 × 1,424 = 961,200
712 × 1,350 = 961,200
720 × 1,335 = 961,200
801 × 1,200 = 961,200
890 × 1,080 = 961,200
900 × 1,068 = 961,200
60 unique multiplications The final answer:
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