To find all the divisors of the number 241,280:
- 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 241,280:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
241,280 = 27 × 5 × 13 × 29
241,280 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 = (7 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 8 × 2 × 2 × 2 = 64
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 241,280
- 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
prime factor =
29
composite factor = 2
5 =
32
composite factor = 2
3 × 5 =
40
composite factor = 2
2 × 13 =
52
composite factor = 2 × 29 =
58
composite factor = 2
6 =
64
composite factor = 5 × 13 =
65
composite factor = 2
4 × 5 =
80
composite factor = 2
3 × 13 =
104
composite factor = 2
2 × 29 =
116
composite factor = 2
7 =
128
composite factor = 2 × 5 × 13 =
130
composite factor = 5 × 29 =
145
composite factor = 2
5 × 5 =
160
composite factor = 2
4 × 13 =
208
composite factor = 2
3 × 29 =
232
composite factor = 2
2 × 5 × 13 =
260
composite factor = 2 × 5 × 29 =
290
composite factor = 2
6 × 5 =
320
composite factor = 13 × 29 =
377
composite factor = 2
5 × 13 =
416
composite factor = 2
4 × 29 =
464
This list continues below...
... This list continues from above
composite factor = 2
3 × 5 × 13 =
520
composite factor = 2
2 × 5 × 29 =
580
composite factor = 2
7 × 5 =
640
composite factor = 2 × 13 × 29 =
754
composite factor = 2
6 × 13 =
832
composite factor = 2
5 × 29 =
928
composite factor = 2
4 × 5 × 13 =
1,040
composite factor = 2
3 × 5 × 29 =
1,160
composite factor = 2
2 × 13 × 29 =
1,508
composite factor = 2
7 × 13 =
1,664
composite factor = 2
6 × 29 =
1,856
composite factor = 5 × 13 × 29 =
1,885
composite factor = 2
5 × 5 × 13 =
2,080
composite factor = 2
4 × 5 × 29 =
2,320
composite factor = 2
3 × 13 × 29 =
3,016
composite factor = 2
7 × 29 =
3,712
composite factor = 2 × 5 × 13 × 29 =
3,770
composite factor = 2
6 × 5 × 13 =
4,160
composite factor = 2
5 × 5 × 29 =
4,640
composite factor = 2
4 × 13 × 29 =
6,032
composite factor = 2
2 × 5 × 13 × 29 =
7,540
composite factor = 2
7 × 5 × 13 =
8,320
composite factor = 2
6 × 5 × 29 =
9,280
composite factor = 2
5 × 13 × 29 =
12,064
composite factor = 2
3 × 5 × 13 × 29 =
15,080
composite factor = 2
7 × 5 × 29 =
18,560
composite factor = 2
6 × 13 × 29 =
24,128
composite factor = 2
4 × 5 × 13 × 29 =
30,160
composite factor = 2
7 × 13 × 29 =
48,256
composite factor = 2
5 × 5 × 13 × 29 =
60,320
composite factor = 2
6 × 5 × 13 × 29 =
120,640
composite factor = 2
7 × 5 × 13 × 29 =
241,280
64 factors (divisors)
What times what is 241,280?
What number multiplied by what number equals 241,280?
All the combinations of any two natural numbers whose product equals 241,280.
1 × 241,280 = 241,280
2 × 120,640 = 241,280
4 × 60,320 = 241,280
5 × 48,256 = 241,280
8 × 30,160 = 241,280
10 × 24,128 = 241,280
13 × 18,560 = 241,280
16 × 15,080 = 241,280
20 × 12,064 = 241,280
26 × 9,280 = 241,280
29 × 8,320 = 241,280
32 × 7,540 = 241,280
40 × 6,032 = 241,280
52 × 4,640 = 241,280
58 × 4,160 = 241,280
64 × 3,770 = 241,280
65 × 3,712 = 241,280
80 × 3,016 = 241,280
104 × 2,320 = 241,280
116 × 2,080 = 241,280
128 × 1,885 = 241,280
130 × 1,856 = 241,280
145 × 1,664 = 241,280
160 × 1,508 = 241,280
208 × 1,160 = 241,280
232 × 1,040 = 241,280
260 × 928 = 241,280
290 × 832 = 241,280
320 × 754 = 241,280
377 × 640 = 241,280
416 × 580 = 241,280
464 × 520 = 241,280
32 unique multiplications The final answer:
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