To find all the divisors of the number 342,925:
- 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 342,925:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
342,925 = 52 × 11 × 29 × 43
342,925 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) = 3 × 2 × 2 × 2 = 24
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 342,925
- 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 =
5
prime factor =
11
composite factor = 5
2 =
25
prime factor =
29
prime factor =
43
composite factor = 5 × 11 =
55
composite factor = 5 × 29 =
145
composite factor = 5 × 43 =
215
composite factor = 5
2 × 11 =
275
composite factor = 11 × 29 =
319
composite factor = 11 × 43 =
473
This list continues below...
... This list continues from above
composite factor = 5
2 × 29 =
725
composite factor = 5
2 × 43 =
1,075
composite factor = 29 × 43 =
1,247
composite factor = 5 × 11 × 29 =
1,595
composite factor = 5 × 11 × 43 =
2,365
composite factor = 5 × 29 × 43 =
6,235
composite factor = 5
2 × 11 × 29 =
7,975
composite factor = 5
2 × 11 × 43 =
11,825
composite factor = 11 × 29 × 43 =
13,717
composite factor = 5
2 × 29 × 43 =
31,175
composite factor = 5 × 11 × 29 × 43 =
68,585
composite factor = 5
2 × 11 × 29 × 43 =
342,925
24 factors (divisors)
What times what is 342,925?
What number multiplied by what number equals 342,925?
All the combinations of any two natural numbers whose product equals 342,925.
1 × 342,925 = 342,925
5 × 68,585 = 342,925
11 × 31,175 = 342,925
25 × 13,717 = 342,925
29 × 11,825 = 342,925
43 × 7,975 = 342,925
55 × 6,235 = 342,925
145 × 2,365 = 342,925
215 × 1,595 = 342,925
275 × 1,247 = 342,925
319 × 1,075 = 342,925
473 × 725 = 342,925
12 unique multiplications The final answer:
(scroll down)