To find all the divisors of the number 29,610:
- 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 29,610:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
29,610 = 2 × 32 × 5 × 7 × 47
29,610 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 = (1 + 1) × (2 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 2 × 3 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 29,610
- 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
prime factor =
5
composite factor = 2 × 3 =
6
prime factor =
7
composite factor = 3
2 =
9
composite factor = 2 × 5 =
10
composite factor = 2 × 7 =
14
composite factor = 3 × 5 =
15
composite factor = 2 × 3
2 =
18
composite factor = 3 × 7 =
21
composite factor = 2 × 3 × 5 =
30
composite factor = 5 × 7 =
35
composite factor = 2 × 3 × 7 =
42
composite factor = 3
2 × 5 =
45
prime factor =
47
composite factor = 3
2 × 7 =
63
composite factor = 2 × 5 × 7 =
70
composite factor = 2 × 3
2 × 5 =
90
composite factor = 2 × 47 =
94
composite factor = 3 × 5 × 7 =
105
composite factor = 2 × 3
2 × 7 =
126
composite factor = 3 × 47 =
141
This list continues below...
... This list continues from above
composite factor = 2 × 3 × 5 × 7 =
210
composite factor = 5 × 47 =
235
composite factor = 2 × 3 × 47 =
282
composite factor = 3
2 × 5 × 7 =
315
composite factor = 7 × 47 =
329
composite factor = 3
2 × 47 =
423
composite factor = 2 × 5 × 47 =
470
composite factor = 2 × 3
2 × 5 × 7 =
630
composite factor = 2 × 7 × 47 =
658
composite factor = 3 × 5 × 47 =
705
composite factor = 2 × 3
2 × 47 =
846
composite factor = 3 × 7 × 47 =
987
composite factor = 2 × 3 × 5 × 47 =
1,410
composite factor = 5 × 7 × 47 =
1,645
composite factor = 2 × 3 × 7 × 47 =
1,974
composite factor = 3
2 × 5 × 47 =
2,115
composite factor = 3
2 × 7 × 47 =
2,961
composite factor = 2 × 5 × 7 × 47 =
3,290
composite factor = 2 × 3
2 × 5 × 47 =
4,230
composite factor = 3 × 5 × 7 × 47 =
4,935
composite factor = 2 × 3
2 × 7 × 47 =
5,922
composite factor = 2 × 3 × 5 × 7 × 47 =
9,870
composite factor = 3
2 × 5 × 7 × 47 =
14,805
composite factor = 2 × 3
2 × 5 × 7 × 47 =
29,610
48 factors (divisors)
What times what is 29,610?
What number multiplied by what number equals 29,610?
All the combinations of any two natural numbers whose product equals 29,610.
1 × 29,610 = 29,610
2 × 14,805 = 29,610
3 × 9,870 = 29,610
5 × 5,922 = 29,610
6 × 4,935 = 29,610
7 × 4,230 = 29,610
9 × 3,290 = 29,610
10 × 2,961 = 29,610
14 × 2,115 = 29,610
15 × 1,974 = 29,610
18 × 1,645 = 29,610
21 × 1,410 = 29,610
30 × 987 = 29,610
35 × 846 = 29,610
42 × 705 = 29,610
45 × 658 = 29,610
47 × 630 = 29,610
63 × 470 = 29,610
70 × 423 = 29,610
90 × 329 = 29,610
94 × 315 = 29,610
105 × 282 = 29,610
126 × 235 = 29,610
141 × 210 = 29,610
24 unique multiplications The final answer:
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