To find all the divisors of the number 968,800:
- 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 968,800:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
968,800 = 25 × 52 × 7 × 173
968,800 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) × (1 + 1) × (1 + 1) = 6 × 3 × 2 × 2 = 72
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 968,800
- 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
composite factor = 2
2 =
4
prime factor =
5
prime factor =
7
composite factor = 2
3 =
8
composite factor = 2 × 5 =
10
composite factor = 2 × 7 =
14
composite factor = 2
4 =
16
composite factor = 2
2 × 5 =
20
composite factor = 5
2 =
25
composite factor = 2
2 × 7 =
28
composite factor = 2
5 =
32
composite factor = 5 × 7 =
35
composite factor = 2
3 × 5 =
40
composite factor = 2 × 5
2 =
50
composite factor = 2
3 × 7 =
56
composite factor = 2 × 5 × 7 =
70
composite factor = 2
4 × 5 =
80
composite factor = 2
2 × 5
2 =
100
composite factor = 2
4 × 7 =
112
composite factor = 2
2 × 5 × 7 =
140
composite factor = 2
5 × 5 =
160
prime factor =
173
composite factor = 5
2 × 7 =
175
composite factor = 2
3 × 5
2 =
200
composite factor = 2
5 × 7 =
224
composite factor = 2
3 × 5 × 7 =
280
composite factor = 2 × 173 =
346
composite factor = 2 × 5
2 × 7 =
350
composite factor = 2
4 × 5
2 =
400
composite factor = 2
4 × 5 × 7 =
560
composite factor = 2
2 × 173 =
692
composite factor = 2
2 × 5
2 × 7 =
700
composite factor = 2
5 × 5
2 =
800
composite factor = 5 × 173 =
865
This list continues below...
... This list continues from above
composite factor = 2
5 × 5 × 7 =
1,120
composite factor = 7 × 173 =
1,211
composite factor = 2
3 × 173 =
1,384
composite factor = 2
3 × 5
2 × 7 =
1,400
composite factor = 2 × 5 × 173 =
1,730
composite factor = 2 × 7 × 173 =
2,422
composite factor = 2
4 × 173 =
2,768
composite factor = 2
4 × 5
2 × 7 =
2,800
composite factor = 2
2 × 5 × 173 =
3,460
composite factor = 5
2 × 173 =
4,325
composite factor = 2
2 × 7 × 173 =
4,844
composite factor = 2
5 × 173 =
5,536
composite factor = 2
5 × 5
2 × 7 =
5,600
composite factor = 5 × 7 × 173 =
6,055
composite factor = 2
3 × 5 × 173 =
6,920
composite factor = 2 × 5
2 × 173 =
8,650
composite factor = 2
3 × 7 × 173 =
9,688
composite factor = 2 × 5 × 7 × 173 =
12,110
composite factor = 2
4 × 5 × 173 =
13,840
composite factor = 2
2 × 5
2 × 173 =
17,300
composite factor = 2
4 × 7 × 173 =
19,376
composite factor = 2
2 × 5 × 7 × 173 =
24,220
composite factor = 2
5 × 5 × 173 =
27,680
composite factor = 5
2 × 7 × 173 =
30,275
composite factor = 2
3 × 5
2 × 173 =
34,600
composite factor = 2
5 × 7 × 173 =
38,752
composite factor = 2
3 × 5 × 7 × 173 =
48,440
composite factor = 2 × 5
2 × 7 × 173 =
60,550
composite factor = 2
4 × 5
2 × 173 =
69,200
composite factor = 2
4 × 5 × 7 × 173 =
96,880
composite factor = 2
2 × 5
2 × 7 × 173 =
121,100
composite factor = 2
5 × 5
2 × 173 =
138,400
composite factor = 2
5 × 5 × 7 × 173 =
193,760
composite factor = 2
3 × 5
2 × 7 × 173 =
242,200
composite factor = 2
4 × 5
2 × 7 × 173 =
484,400
composite factor = 2
5 × 5
2 × 7 × 173 =
968,800
72 factors (divisors)
What times what is 968,800?
What number multiplied by what number equals 968,800?
All the combinations of any two natural numbers whose product equals 968,800.
1 × 968,800 = 968,800
2 × 484,400 = 968,800
4 × 242,200 = 968,800
5 × 193,760 = 968,800
7 × 138,400 = 968,800
8 × 121,100 = 968,800
10 × 96,880 = 968,800
14 × 69,200 = 968,800
16 × 60,550 = 968,800
20 × 48,440 = 968,800
25 × 38,752 = 968,800
28 × 34,600 = 968,800
32 × 30,275 = 968,800
35 × 27,680 = 968,800
40 × 24,220 = 968,800
50 × 19,376 = 968,800
56 × 17,300 = 968,800
70 × 13,840 = 968,800
80 × 12,110 = 968,800
100 × 9,688 = 968,800
112 × 8,650 = 968,800
140 × 6,920 = 968,800
160 × 6,055 = 968,800
173 × 5,600 = 968,800
175 × 5,536 = 968,800
200 × 4,844 = 968,800
224 × 4,325 = 968,800
280 × 3,460 = 968,800
346 × 2,800 = 968,800
350 × 2,768 = 968,800
400 × 2,422 = 968,800
560 × 1,730 = 968,800
692 × 1,400 = 968,800
700 × 1,384 = 968,800
800 × 1,211 = 968,800
865 × 1,120 = 968,800
36 unique multiplications The final answer:
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