To find all the divisors of the number 836,100:
- 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 836,100:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
836,100 = 22 × 32 × 52 × 929
836,100 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) × (2 + 1) × (1 + 1) = 3 × 3 × 3 × 2 = 54
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 836,100
- 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 = 3
2 =
9
composite factor = 2 × 5 =
10
composite factor = 2
2 × 3 =
12
composite factor = 3 × 5 =
15
composite factor = 2 × 3
2 =
18
composite factor = 2
2 × 5 =
20
composite factor = 5
2 =
25
composite factor = 2 × 3 × 5 =
30
composite factor = 2
2 × 3
2 =
36
composite factor = 3
2 × 5 =
45
composite factor = 2 × 5
2 =
50
composite factor = 2
2 × 3 × 5 =
60
composite factor = 3 × 5
2 =
75
composite factor = 2 × 3
2 × 5 =
90
composite factor = 2
2 × 5
2 =
100
composite factor = 2 × 3 × 5
2 =
150
composite factor = 2
2 × 3
2 × 5 =
180
composite factor = 3
2 × 5
2 =
225
composite factor = 2
2 × 3 × 5
2 =
300
composite factor = 2 × 3
2 × 5
2 =
450
composite factor = 2
2 × 3
2 × 5
2 =
900
This list continues below...
... This list continues from above
prime factor =
929
composite factor = 2 × 929 =
1,858
composite factor = 3 × 929 =
2,787
composite factor = 2
2 × 929 =
3,716
composite factor = 5 × 929 =
4,645
composite factor = 2 × 3 × 929 =
5,574
composite factor = 3
2 × 929 =
8,361
composite factor = 2 × 5 × 929 =
9,290
composite factor = 2
2 × 3 × 929 =
11,148
composite factor = 3 × 5 × 929 =
13,935
composite factor = 2 × 3
2 × 929 =
16,722
composite factor = 2
2 × 5 × 929 =
18,580
composite factor = 5
2 × 929 =
23,225
composite factor = 2 × 3 × 5 × 929 =
27,870
composite factor = 2
2 × 3
2 × 929 =
33,444
composite factor = 3
2 × 5 × 929 =
41,805
composite factor = 2 × 5
2 × 929 =
46,450
composite factor = 2
2 × 3 × 5 × 929 =
55,740
composite factor = 3 × 5
2 × 929 =
69,675
composite factor = 2 × 3
2 × 5 × 929 =
83,610
composite factor = 2
2 × 5
2 × 929 =
92,900
composite factor = 2 × 3 × 5
2 × 929 =
139,350
composite factor = 2
2 × 3
2 × 5 × 929 =
167,220
composite factor = 3
2 × 5
2 × 929 =
209,025
composite factor = 2
2 × 3 × 5
2 × 929 =
278,700
composite factor = 2 × 3
2 × 5
2 × 929 =
418,050
composite factor = 2
2 × 3
2 × 5
2 × 929 =
836,100
54 factors (divisors)
What times what is 836,100?
What number multiplied by what number equals 836,100?
All the combinations of any two natural numbers whose product equals 836,100.
1 × 836,100 = 836,100
2 × 418,050 = 836,100
3 × 278,700 = 836,100
4 × 209,025 = 836,100
5 × 167,220 = 836,100
6 × 139,350 = 836,100
9 × 92,900 = 836,100
10 × 83,610 = 836,100
12 × 69,675 = 836,100
15 × 55,740 = 836,100
18 × 46,450 = 836,100
20 × 41,805 = 836,100
25 × 33,444 = 836,100
30 × 27,870 = 836,100
36 × 23,225 = 836,100
45 × 18,580 = 836,100
50 × 16,722 = 836,100
60 × 13,935 = 836,100
75 × 11,148 = 836,100
90 × 9,290 = 836,100
100 × 8,361 = 836,100
150 × 5,574 = 836,100
180 × 4,645 = 836,100
225 × 3,716 = 836,100
300 × 2,787 = 836,100
450 × 1,858 = 836,100
900 × 929 = 836,100
27 unique multiplications The final answer:
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