To find all the divisors of the number 736,250:
- 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 736,250:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
736,250 = 2 × 54 × 19 × 31
736,250 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) × (4 + 1) × (1 + 1) × (1 + 1) = 2 × 5 × 2 × 2 = 40
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 736,250
- 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 =
5
composite factor = 2 × 5 =
10
prime factor =
19
composite factor = 5
2 =
25
prime factor =
31
composite factor = 2 × 19 =
38
composite factor = 2 × 5
2 =
50
composite factor = 2 × 31 =
62
composite factor = 5 × 19 =
95
composite factor = 5
3 =
125
composite factor = 5 × 31 =
155
composite factor = 2 × 5 × 19 =
190
composite factor = 2 × 5
3 =
250
composite factor = 2 × 5 × 31 =
310
composite factor = 5
2 × 19 =
475
composite factor = 19 × 31 =
589
composite factor = 5
4 =
625
composite factor = 5
2 × 31 =
775
This list continues below...
... This list continues from above
composite factor = 2 × 5
2 × 19 =
950
composite factor = 2 × 19 × 31 =
1,178
composite factor = 2 × 5
4 =
1,250
composite factor = 2 × 5
2 × 31 =
1,550
composite factor = 5
3 × 19 =
2,375
composite factor = 5 × 19 × 31 =
2,945
composite factor = 5
3 × 31 =
3,875
composite factor = 2 × 5
3 × 19 =
4,750
composite factor = 2 × 5 × 19 × 31 =
5,890
composite factor = 2 × 5
3 × 31 =
7,750
composite factor = 5
4 × 19 =
11,875
composite factor = 5
2 × 19 × 31 =
14,725
composite factor = 5
4 × 31 =
19,375
composite factor = 2 × 5
4 × 19 =
23,750
composite factor = 2 × 5
2 × 19 × 31 =
29,450
composite factor = 2 × 5
4 × 31 =
38,750
composite factor = 5
3 × 19 × 31 =
73,625
composite factor = 2 × 5
3 × 19 × 31 =
147,250
composite factor = 5
4 × 19 × 31 =
368,125
composite factor = 2 × 5
4 × 19 × 31 =
736,250
40 factors (divisors)
What times what is 736,250?
What number multiplied by what number equals 736,250?
All the combinations of any two natural numbers whose product equals 736,250.
1 × 736,250 = 736,250
2 × 368,125 = 736,250
5 × 147,250 = 736,250
10 × 73,625 = 736,250
19 × 38,750 = 736,250
25 × 29,450 = 736,250
31 × 23,750 = 736,250
38 × 19,375 = 736,250
50 × 14,725 = 736,250
62 × 11,875 = 736,250
95 × 7,750 = 736,250
125 × 5,890 = 736,250
155 × 4,750 = 736,250
190 × 3,875 = 736,250
250 × 2,945 = 736,250
310 × 2,375 = 736,250
475 × 1,550 = 736,250
589 × 1,250 = 736,250
625 × 1,178 = 736,250
775 × 950 = 736,250
20 unique multiplications The final answer:
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