To find all the divisors of the number 3,348,320:
- 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 3,348,320:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
3,348,320 = 25 × 5 × 17 × 1,231
3,348,320 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) × (1 + 1) × (1 + 1) = 6 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 3,348,320
- 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
composite factor = 2
4 =
16
prime factor =
17
composite factor = 2
2 × 5 =
20
composite factor = 2
5 =
32
composite factor = 2 × 17 =
34
composite factor = 2
3 × 5 =
40
composite factor = 2
2 × 17 =
68
composite factor = 2
4 × 5 =
80
composite factor = 5 × 17 =
85
composite factor = 2
3 × 17 =
136
composite factor = 2
5 × 5 =
160
composite factor = 2 × 5 × 17 =
170
composite factor = 2
4 × 17 =
272
composite factor = 2
2 × 5 × 17 =
340
composite factor = 2
5 × 17 =
544
composite factor = 2
3 × 5 × 17 =
680
prime factor =
1,231
composite factor = 2
4 × 5 × 17 =
1,360
This list continues below...
... This list continues from above
composite factor = 2 × 1,231 =
2,462
composite factor = 2
5 × 5 × 17 =
2,720
composite factor = 2
2 × 1,231 =
4,924
composite factor = 5 × 1,231 =
6,155
composite factor = 2
3 × 1,231 =
9,848
composite factor = 2 × 5 × 1,231 =
12,310
composite factor = 2
4 × 1,231 =
19,696
composite factor = 17 × 1,231 =
20,927
composite factor = 2
2 × 5 × 1,231 =
24,620
composite factor = 2
5 × 1,231 =
39,392
composite factor = 2 × 17 × 1,231 =
41,854
composite factor = 2
3 × 5 × 1,231 =
49,240
composite factor = 2
2 × 17 × 1,231 =
83,708
composite factor = 2
4 × 5 × 1,231 =
98,480
composite factor = 5 × 17 × 1,231 =
104,635
composite factor = 2
3 × 17 × 1,231 =
167,416
composite factor = 2
5 × 5 × 1,231 =
196,960
composite factor = 2 × 5 × 17 × 1,231 =
209,270
composite factor = 2
4 × 17 × 1,231 =
334,832
composite factor = 2
2 × 5 × 17 × 1,231 =
418,540
composite factor = 2
5 × 17 × 1,231 =
669,664
composite factor = 2
3 × 5 × 17 × 1,231 =
837,080
composite factor = 2
4 × 5 × 17 × 1,231 =
1,674,160
composite factor = 2
5 × 5 × 17 × 1,231 =
3,348,320
48 factors (divisors)
What times what is 3,348,320?
What number multiplied by what number equals 3,348,320?
All the combinations of any two natural numbers whose product equals 3,348,320.
1 × 3,348,320 = 3,348,320
2 × 1,674,160 = 3,348,320
4 × 837,080 = 3,348,320
5 × 669,664 = 3,348,320
8 × 418,540 = 3,348,320
10 × 334,832 = 3,348,320
16 × 209,270 = 3,348,320
17 × 196,960 = 3,348,320
20 × 167,416 = 3,348,320
32 × 104,635 = 3,348,320
34 × 98,480 = 3,348,320
40 × 83,708 = 3,348,320
68 × 49,240 = 3,348,320
80 × 41,854 = 3,348,320
85 × 39,392 = 3,348,320
136 × 24,620 = 3,348,320
160 × 20,927 = 3,348,320
170 × 19,696 = 3,348,320
272 × 12,310 = 3,348,320
340 × 9,848 = 3,348,320
544 × 6,155 = 3,348,320
680 × 4,924 = 3,348,320
1,231 × 2,720 = 3,348,320
1,360 × 2,462 = 3,348,320
24 unique multiplications The final answer:
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