To find all the divisors of the number 1,000,480:
- 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 1,000,480:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
1,000,480 = 25 × 5 × 132 × 37
1,000,480 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 = (5 + 1) × (1 + 1) × (2 + 1) × (1 + 1) = 6 × 2 × 3 × 2 = 72
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 1,000,480
- 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
composite factor = 2
2 =
4
prime factor =
5
composite factor = 2
3 =
8
composite factor = 2 × 5 =
10
prime factor =
13
composite factor = 2
4 =
16
composite factor = 2
2 × 5 =
20
composite factor = 2 × 13 =
26
composite factor = 2
5 =
32
prime factor =
37
composite factor = 2
3 × 5 =
40
composite factor = 2
2 × 13 =
52
composite factor = 5 × 13 =
65
composite factor = 2 × 37 =
74
composite factor = 2
4 × 5 =
80
composite factor = 2
3 × 13 =
104
composite factor = 2 × 5 × 13 =
130
composite factor = 2
2 × 37 =
148
composite factor = 2
5 × 5 =
160
composite factor = 13
2 =
169
composite factor = 5 × 37 =
185
composite factor = 2
4 × 13 =
208
composite factor = 2
2 × 5 × 13 =
260
composite factor = 2
3 × 37 =
296
composite factor = 2 × 13
2 =
338
composite factor = 2 × 5 × 37 =
370
composite factor = 2
5 × 13 =
416
composite factor = 13 × 37 =
481
composite factor = 2
3 × 5 × 13 =
520
composite factor = 2
4 × 37 =
592
composite factor = 2
2 × 13
2 =
676
composite factor = 2
2 × 5 × 37 =
740
composite factor = 5 × 13
2 =
845
composite factor = 2 × 13 × 37 =
962
This list continues below...
... This list continues from above
composite factor = 2
4 × 5 × 13 =
1,040
composite factor = 2
5 × 37 =
1,184
composite factor = 2
3 × 13
2 =
1,352
composite factor = 2
3 × 5 × 37 =
1,480
composite factor = 2 × 5 × 13
2 =
1,690
composite factor = 2
2 × 13 × 37 =
1,924
composite factor = 2
5 × 5 × 13 =
2,080
composite factor = 5 × 13 × 37 =
2,405
composite factor = 2
4 × 13
2 =
2,704
composite factor = 2
4 × 5 × 37 =
2,960
composite factor = 2
2 × 5 × 13
2 =
3,380
composite factor = 2
3 × 13 × 37 =
3,848
composite factor = 2 × 5 × 13 × 37 =
4,810
composite factor = 2
5 × 13
2 =
5,408
composite factor = 2
5 × 5 × 37 =
5,920
composite factor = 13
2 × 37 =
6,253
composite factor = 2
3 × 5 × 13
2 =
6,760
composite factor = 2
4 × 13 × 37 =
7,696
composite factor = 2
2 × 5 × 13 × 37 =
9,620
composite factor = 2 × 13
2 × 37 =
12,506
composite factor = 2
4 × 5 × 13
2 =
13,520
composite factor = 2
5 × 13 × 37 =
15,392
composite factor = 2
3 × 5 × 13 × 37 =
19,240
composite factor = 2
2 × 13
2 × 37 =
25,012
composite factor = 2
5 × 5 × 13
2 =
27,040
composite factor = 5 × 13
2 × 37 =
31,265
composite factor = 2
4 × 5 × 13 × 37 =
38,480
composite factor = 2
3 × 13
2 × 37 =
50,024
composite factor = 2 × 5 × 13
2 × 37 =
62,530
composite factor = 2
5 × 5 × 13 × 37 =
76,960
composite factor = 2
4 × 13
2 × 37 =
100,048
composite factor = 2
2 × 5 × 13
2 × 37 =
125,060
composite factor = 2
5 × 13
2 × 37 =
200,096
composite factor = 2
3 × 5 × 13
2 × 37 =
250,120
composite factor = 2
4 × 5 × 13
2 × 37 =
500,240
composite factor = 2
5 × 5 × 13
2 × 37 =
1,000,480
72 factors (divisors)
What times what is 1,000,480?
What number multiplied by what number equals 1,000,480?
All the combinations of any two natural numbers whose product equals 1,000,480.
1 × 1,000,480 = 1,000,480
2 × 500,240 = 1,000,480
4 × 250,120 = 1,000,480
5 × 200,096 = 1,000,480
8 × 125,060 = 1,000,480
10 × 100,048 = 1,000,480
13 × 76,960 = 1,000,480
16 × 62,530 = 1,000,480
20 × 50,024 = 1,000,480
26 × 38,480 = 1,000,480
32 × 31,265 = 1,000,480
37 × 27,040 = 1,000,480
40 × 25,012 = 1,000,480
52 × 19,240 = 1,000,480
65 × 15,392 = 1,000,480
74 × 13,520 = 1,000,480
80 × 12,506 = 1,000,480
104 × 9,620 = 1,000,480
130 × 7,696 = 1,000,480
148 × 6,760 = 1,000,480
160 × 6,253 = 1,000,480
169 × 5,920 = 1,000,480
185 × 5,408 = 1,000,480
208 × 4,810 = 1,000,480
260 × 3,848 = 1,000,480
296 × 3,380 = 1,000,480
338 × 2,960 = 1,000,480
370 × 2,704 = 1,000,480
416 × 2,405 = 1,000,480
481 × 2,080 = 1,000,480
520 × 1,924 = 1,000,480
592 × 1,690 = 1,000,480
676 × 1,480 = 1,000,480
740 × 1,352 = 1,000,480
845 × 1,184 = 1,000,480
962 × 1,040 = 1,000,480
36 unique multiplications The final answer:
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