To find all the divisors of the number 9,958,380:
- 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 9,958,380:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
9,958,380 = 22 × 3 × 5 × 269 × 617
9,958,380 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 = (2 + 1) × (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 3 × 2 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 9,958,380
- 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
2 =
4
prime factor =
5
composite factor = 2 × 3 =
6
composite factor = 2 × 5 =
10
composite factor = 2
2 × 3 =
12
composite factor = 3 × 5 =
15
composite factor = 2
2 × 5 =
20
composite factor = 2 × 3 × 5 =
30
composite factor = 2
2 × 3 × 5 =
60
prime factor =
269
composite factor = 2 × 269 =
538
prime factor =
617
composite factor = 3 × 269 =
807
composite factor = 2
2 × 269 =
1,076
composite factor = 2 × 617 =
1,234
composite factor = 5 × 269 =
1,345
composite factor = 2 × 3 × 269 =
1,614
composite factor = 3 × 617 =
1,851
composite factor = 2
2 × 617 =
2,468
composite factor = 2 × 5 × 269 =
2,690
composite factor = 5 × 617 =
3,085
This list continues below...
... This list continues from above
composite factor = 2
2 × 3 × 269 =
3,228
composite factor = 2 × 3 × 617 =
3,702
composite factor = 3 × 5 × 269 =
4,035
composite factor = 2
2 × 5 × 269 =
5,380
composite factor = 2 × 5 × 617 =
6,170
composite factor = 2
2 × 3 × 617 =
7,404
composite factor = 2 × 3 × 5 × 269 =
8,070
composite factor = 3 × 5 × 617 =
9,255
composite factor = 2
2 × 5 × 617 =
12,340
composite factor = 2
2 × 3 × 5 × 269 =
16,140
composite factor = 2 × 3 × 5 × 617 =
18,510
composite factor = 2
2 × 3 × 5 × 617 =
37,020
composite factor = 269 × 617 =
165,973
composite factor = 2 × 269 × 617 =
331,946
composite factor = 3 × 269 × 617 =
497,919
composite factor = 2
2 × 269 × 617 =
663,892
composite factor = 5 × 269 × 617 =
829,865
composite factor = 2 × 3 × 269 × 617 =
995,838
composite factor = 2 × 5 × 269 × 617 =
1,659,730
composite factor = 2
2 × 3 × 269 × 617 =
1,991,676
composite factor = 3 × 5 × 269 × 617 =
2,489,595
composite factor = 2
2 × 5 × 269 × 617 =
3,319,460
composite factor = 2 × 3 × 5 × 269 × 617 =
4,979,190
composite factor = 2
2 × 3 × 5 × 269 × 617 =
9,958,380
48 factors (divisors)
What times what is 9,958,380?
What number multiplied by what number equals 9,958,380?
All the combinations of any two natural numbers whose product equals 9,958,380.
1 × 9,958,380 = 9,958,380
2 × 4,979,190 = 9,958,380
3 × 3,319,460 = 9,958,380
4 × 2,489,595 = 9,958,380
5 × 1,991,676 = 9,958,380
6 × 1,659,730 = 9,958,380
10 × 995,838 = 9,958,380
12 × 829,865 = 9,958,380
15 × 663,892 = 9,958,380
20 × 497,919 = 9,958,380
30 × 331,946 = 9,958,380
60 × 165,973 = 9,958,380
269 × 37,020 = 9,958,380
538 × 18,510 = 9,958,380
617 × 16,140 = 9,958,380
807 × 12,340 = 9,958,380
1,076 × 9,255 = 9,958,380
1,234 × 8,070 = 9,958,380
1,345 × 7,404 = 9,958,380
1,614 × 6,170 = 9,958,380
1,851 × 5,380 = 9,958,380
2,468 × 4,035 = 9,958,380
2,690 × 3,702 = 9,958,380
3,085 × 3,228 = 9,958,380
24 unique multiplications The final answer:
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