To find all the divisors of the number 40,782,335:
- 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 40,782,335:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
40,782,335 = 5 × 11 × 23 × 103 × 313
40,782,335 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) × (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 2 × 2 × 2 × 2 × 2 = 32
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 40,782,335
- Multiply the prime factors involved in the prime factorization of the number in all their unique combinations, that give different results.
- 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
prime factor =
23
composite factor = 5 × 11 =
55
prime factor =
103
composite factor = 5 × 23 =
115
composite factor = 11 × 23 =
253
prime factor =
313
composite factor = 5 × 103 =
515
composite factor = 11 × 103 =
1,133
composite factor = 5 × 11 × 23 =
1,265
composite factor = 5 × 313 =
1,565
composite factor = 23 × 103 =
2,369
composite factor = 11 × 313 =
3,443
composite factor = 5 × 11 × 103 =
5,665
This list continues below...
... This list continues from above
composite factor = 23 × 313 =
7,199
composite factor = 5 × 23 × 103 =
11,845
composite factor = 5 × 11 × 313 =
17,215
composite factor = 11 × 23 × 103 =
26,059
composite factor = 103 × 313 =
32,239
composite factor = 5 × 23 × 313 =
35,995
composite factor = 11 × 23 × 313 =
79,189
composite factor = 5 × 11 × 23 × 103 =
130,295
composite factor = 5 × 103 × 313 =
161,195
composite factor = 11 × 103 × 313 =
354,629
composite factor = 5 × 11 × 23 × 313 =
395,945
composite factor = 23 × 103 × 313 =
741,497
composite factor = 5 × 11 × 103 × 313 =
1,773,145
composite factor = 5 × 23 × 103 × 313 =
3,707,485
composite factor = 11 × 23 × 103 × 313 =
8,156,467
composite factor = 5 × 11 × 23 × 103 × 313 =
40,782,335
32 factors (divisors)
What times what is 40,782,335?
What number multiplied by what number equals 40,782,335?
All the combinations of any two natural numbers whose product equals 40,782,335.
1 × 40,782,335 = 40,782,335
5 × 8,156,467 = 40,782,335
11 × 3,707,485 = 40,782,335
23 × 1,773,145 = 40,782,335
55 × 741,497 = 40,782,335
103 × 395,945 = 40,782,335
115 × 354,629 = 40,782,335
253 × 161,195 = 40,782,335
313 × 130,295 = 40,782,335
515 × 79,189 = 40,782,335
1,133 × 35,995 = 40,782,335
1,265 × 32,239 = 40,782,335
1,565 × 26,059 = 40,782,335
2,369 × 17,215 = 40,782,335
3,443 × 11,845 = 40,782,335
5,665 × 7,199 = 40,782,335
16 unique multiplications The final answer:
(scroll down)