To find all the divisors of the number 677,772:
- 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 677,772:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
677,772 = 22 × 32 × 67 × 281
677,772 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) × (2 + 1) × (1 + 1) × (1 + 1) = 3 × 3 × 2 × 2 = 36
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 677,772
- 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
composite factor = 2 × 3 =
6
composite factor = 3
2 =
9
composite factor = 2
2 × 3 =
12
composite factor = 2 × 3
2 =
18
composite factor = 2
2 × 3
2 =
36
prime factor =
67
composite factor = 2 × 67 =
134
composite factor = 3 × 67 =
201
composite factor = 2
2 × 67 =
268
prime factor =
281
composite factor = 2 × 3 × 67 =
402
composite factor = 2 × 281 =
562
composite factor = 3
2 × 67 =
603
composite factor = 2
2 × 3 × 67 =
804
This list continues below...
... This list continues from above
composite factor = 3 × 281 =
843
composite factor = 2
2 × 281 =
1,124
composite factor = 2 × 3
2 × 67 =
1,206
composite factor = 2 × 3 × 281 =
1,686
composite factor = 2
2 × 3
2 × 67 =
2,412
composite factor = 3
2 × 281 =
2,529
composite factor = 2
2 × 3 × 281 =
3,372
composite factor = 2 × 3
2 × 281 =
5,058
composite factor = 2
2 × 3
2 × 281 =
10,116
composite factor = 67 × 281 =
18,827
composite factor = 2 × 67 × 281 =
37,654
composite factor = 3 × 67 × 281 =
56,481
composite factor = 2
2 × 67 × 281 =
75,308
composite factor = 2 × 3 × 67 × 281 =
112,962
composite factor = 3
2 × 67 × 281 =
169,443
composite factor = 2
2 × 3 × 67 × 281 =
225,924
composite factor = 2 × 3
2 × 67 × 281 =
338,886
composite factor = 2
2 × 3
2 × 67 × 281 =
677,772
36 factors (divisors)
What times what is 677,772?
What number multiplied by what number equals 677,772?
All the combinations of any two natural numbers whose product equals 677,772.
1 × 677,772 = 677,772
2 × 338,886 = 677,772
3 × 225,924 = 677,772
4 × 169,443 = 677,772
6 × 112,962 = 677,772
9 × 75,308 = 677,772
12 × 56,481 = 677,772
18 × 37,654 = 677,772
36 × 18,827 = 677,772
67 × 10,116 = 677,772
134 × 5,058 = 677,772
201 × 3,372 = 677,772
268 × 2,529 = 677,772
281 × 2,412 = 677,772
402 × 1,686 = 677,772
562 × 1,206 = 677,772
603 × 1,124 = 677,772
804 × 843 = 677,772
18 unique multiplications The final answer:
(scroll down)