To find all the divisors of the number 1,332,480:
- 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 1,332,480:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
1,332,480 = 28 × 3 × 5 × 347
1,332,480 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 = (8 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 9 × 2 × 2 × 2 = 72
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 1,332,480
- 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 = 2 × 3 × 5 =
30
composite factor = 2
5 =
32
composite factor = 2
3 × 5 =
40
composite factor = 2
4 × 3 =
48
composite factor = 2
2 × 3 × 5 =
60
composite factor = 2
6 =
64
composite factor = 2
4 × 5 =
80
composite factor = 2
5 × 3 =
96
composite factor = 2
3 × 3 × 5 =
120
composite factor = 2
7 =
128
composite factor = 2
5 × 5 =
160
composite factor = 2
6 × 3 =
192
composite factor = 2
4 × 3 × 5 =
240
composite factor = 2
8 =
256
composite factor = 2
6 × 5 =
320
prime factor =
347
composite factor = 2
7 × 3 =
384
composite factor = 2
5 × 3 × 5 =
480
composite factor = 2
7 × 5 =
640
composite factor = 2 × 347 =
694
composite factor = 2
8 × 3 =
768
composite factor = 2
6 × 3 × 5 =
960
composite factor = 3 × 347 =
1,041
This list continues below...
... This list continues from above
composite factor = 2
8 × 5 =
1,280
composite factor = 2
2 × 347 =
1,388
composite factor = 5 × 347 =
1,735
composite factor = 2
7 × 3 × 5 =
1,920
composite factor = 2 × 3 × 347 =
2,082
composite factor = 2
3 × 347 =
2,776
composite factor = 2 × 5 × 347 =
3,470
composite factor = 2
8 × 3 × 5 =
3,840
composite factor = 2
2 × 3 × 347 =
4,164
composite factor = 3 × 5 × 347 =
5,205
composite factor = 2
4 × 347 =
5,552
composite factor = 2
2 × 5 × 347 =
6,940
composite factor = 2
3 × 3 × 347 =
8,328
composite factor = 2 × 3 × 5 × 347 =
10,410
composite factor = 2
5 × 347 =
11,104
composite factor = 2
3 × 5 × 347 =
13,880
composite factor = 2
4 × 3 × 347 =
16,656
composite factor = 2
2 × 3 × 5 × 347 =
20,820
composite factor = 2
6 × 347 =
22,208
composite factor = 2
4 × 5 × 347 =
27,760
composite factor = 2
5 × 3 × 347 =
33,312
composite factor = 2
3 × 3 × 5 × 347 =
41,640
composite factor = 2
7 × 347 =
44,416
composite factor = 2
5 × 5 × 347 =
55,520
composite factor = 2
6 × 3 × 347 =
66,624
composite factor = 2
4 × 3 × 5 × 347 =
83,280
composite factor = 2
8 × 347 =
88,832
composite factor = 2
6 × 5 × 347 =
111,040
composite factor = 2
7 × 3 × 347 =
133,248
composite factor = 2
5 × 3 × 5 × 347 =
166,560
composite factor = 2
7 × 5 × 347 =
222,080
composite factor = 2
8 × 3 × 347 =
266,496
composite factor = 2
6 × 3 × 5 × 347 =
333,120
composite factor = 2
8 × 5 × 347 =
444,160
composite factor = 2
7 × 3 × 5 × 347 =
666,240
composite factor = 2
8 × 3 × 5 × 347 =
1,332,480
72 factors (divisors)
What times what is 1,332,480?
What number multiplied by what number equals 1,332,480?
All the combinations of any two natural numbers whose product equals 1,332,480.
1 × 1,332,480 = 1,332,480
2 × 666,240 = 1,332,480
3 × 444,160 = 1,332,480
4 × 333,120 = 1,332,480
5 × 266,496 = 1,332,480
6 × 222,080 = 1,332,480
8 × 166,560 = 1,332,480
10 × 133,248 = 1,332,480
12 × 111,040 = 1,332,480
15 × 88,832 = 1,332,480
16 × 83,280 = 1,332,480
20 × 66,624 = 1,332,480
24 × 55,520 = 1,332,480
30 × 44,416 = 1,332,480
32 × 41,640 = 1,332,480
40 × 33,312 = 1,332,480
48 × 27,760 = 1,332,480
60 × 22,208 = 1,332,480
64 × 20,820 = 1,332,480
80 × 16,656 = 1,332,480
96 × 13,880 = 1,332,480
120 × 11,104 = 1,332,480
128 × 10,410 = 1,332,480
160 × 8,328 = 1,332,480
192 × 6,940 = 1,332,480
240 × 5,552 = 1,332,480
256 × 5,205 = 1,332,480
320 × 4,164 = 1,332,480
347 × 3,840 = 1,332,480
384 × 3,470 = 1,332,480
480 × 2,776 = 1,332,480
640 × 2,082 = 1,332,480
694 × 1,920 = 1,332,480
768 × 1,735 = 1,332,480
960 × 1,388 = 1,332,480
1,041 × 1,280 = 1,332,480
36 unique multiplications The final answer:
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