To find all the divisors of the number 98,658:
- 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 98,658:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
98,658 = 2 × 35 × 7 × 29
98,658 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) × (5 + 1) × (1 + 1) × (1 + 1) = 2 × 6 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 98,658
- 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 × 3 =
6
prime factor =
7
composite factor = 3
2 =
9
composite factor = 2 × 7 =
14
composite factor = 2 × 3
2 =
18
composite factor = 3 × 7 =
21
composite factor = 3
3 =
27
prime factor =
29
composite factor = 2 × 3 × 7 =
42
composite factor = 2 × 3
3 =
54
composite factor = 2 × 29 =
58
composite factor = 3
2 × 7 =
63
composite factor = 3
4 =
81
composite factor = 3 × 29 =
87
composite factor = 2 × 3
2 × 7 =
126
composite factor = 2 × 3
4 =
162
composite factor = 2 × 3 × 29 =
174
composite factor = 3
3 × 7 =
189
composite factor = 7 × 29 =
203
composite factor = 3
5 =
243
composite factor = 3
2 × 29 =
261
This list continues below...
... This list continues from above
composite factor = 2 × 3
3 × 7 =
378
composite factor = 2 × 7 × 29 =
406
composite factor = 2 × 3
5 =
486
composite factor = 2 × 3
2 × 29 =
522
composite factor = 3
4 × 7 =
567
composite factor = 3 × 7 × 29 =
609
composite factor = 3
3 × 29 =
783
composite factor = 2 × 3
4 × 7 =
1,134
composite factor = 2 × 3 × 7 × 29 =
1,218
composite factor = 2 × 3
3 × 29 =
1,566
composite factor = 3
5 × 7 =
1,701
composite factor = 3
2 × 7 × 29 =
1,827
composite factor = 3
4 × 29 =
2,349
composite factor = 2 × 3
5 × 7 =
3,402
composite factor = 2 × 3
2 × 7 × 29 =
3,654
composite factor = 2 × 3
4 × 29 =
4,698
composite factor = 3
3 × 7 × 29 =
5,481
composite factor = 3
5 × 29 =
7,047
composite factor = 2 × 3
3 × 7 × 29 =
10,962
composite factor = 2 × 3
5 × 29 =
14,094
composite factor = 3
4 × 7 × 29 =
16,443
composite factor = 2 × 3
4 × 7 × 29 =
32,886
composite factor = 3
5 × 7 × 29 =
49,329
composite factor = 2 × 3
5 × 7 × 29 =
98,658
48 factors (divisors)
What times what is 98,658?
What number multiplied by what number equals 98,658?
All the combinations of any two natural numbers whose product equals 98,658.
1 × 98,658 = 98,658
2 × 49,329 = 98,658
3 × 32,886 = 98,658
6 × 16,443 = 98,658
7 × 14,094 = 98,658
9 × 10,962 = 98,658
14 × 7,047 = 98,658
18 × 5,481 = 98,658
21 × 4,698 = 98,658
27 × 3,654 = 98,658
29 × 3,402 = 98,658
42 × 2,349 = 98,658
54 × 1,827 = 98,658
58 × 1,701 = 98,658
63 × 1,566 = 98,658
81 × 1,218 = 98,658
87 × 1,134 = 98,658
126 × 783 = 98,658
162 × 609 = 98,658
174 × 567 = 98,658
189 × 522 = 98,658
203 × 486 = 98,658
243 × 406 = 98,658
261 × 378 = 98,658
24 unique multiplications The final answer:
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