To find all the divisors of the number 930,900:
- 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 930,900:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
930,900 = 22 × 3 × 52 × 29 × 107
930,900 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) × (2 + 1) × (1 + 1) × (1 + 1) = 3 × 2 × 3 × 2 × 2 = 72
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 930,900
- 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 = 2 × 5 =
10
composite factor = 2
2 × 3 =
12
composite factor = 3 × 5 =
15
composite factor = 2
2 × 5 =
20
composite factor = 5
2 =
25
prime factor =
29
composite factor = 2 × 3 × 5 =
30
composite factor = 2 × 5
2 =
50
composite factor = 2 × 29 =
58
composite factor = 2
2 × 3 × 5 =
60
composite factor = 3 × 5
2 =
75
composite factor = 3 × 29 =
87
composite factor = 2
2 × 5
2 =
100
prime factor =
107
composite factor = 2
2 × 29 =
116
composite factor = 5 × 29 =
145
composite factor = 2 × 3 × 5
2 =
150
composite factor = 2 × 3 × 29 =
174
composite factor = 2 × 107 =
214
composite factor = 2 × 5 × 29 =
290
composite factor = 2
2 × 3 × 5
2 =
300
composite factor = 3 × 107 =
321
composite factor = 2
2 × 3 × 29 =
348
composite factor = 2
2 × 107 =
428
composite factor = 3 × 5 × 29 =
435
composite factor = 5 × 107 =
535
composite factor = 2
2 × 5 × 29 =
580
composite factor = 2 × 3 × 107 =
642
composite factor = 5
2 × 29 =
725
composite factor = 2 × 3 × 5 × 29 =
870
This list continues below...
... This list continues from above
composite factor = 2 × 5 × 107 =
1,070
composite factor = 2
2 × 3 × 107 =
1,284
composite factor = 2 × 5
2 × 29 =
1,450
composite factor = 3 × 5 × 107 =
1,605
composite factor = 2
2 × 3 × 5 × 29 =
1,740
composite factor = 2
2 × 5 × 107 =
2,140
composite factor = 3 × 5
2 × 29 =
2,175
composite factor = 5
2 × 107 =
2,675
composite factor = 2
2 × 5
2 × 29 =
2,900
composite factor = 29 × 107 =
3,103
composite factor = 2 × 3 × 5 × 107 =
3,210
composite factor = 2 × 3 × 5
2 × 29 =
4,350
composite factor = 2 × 5
2 × 107 =
5,350
composite factor = 2 × 29 × 107 =
6,206
composite factor = 2
2 × 3 × 5 × 107 =
6,420
composite factor = 3 × 5
2 × 107 =
8,025
composite factor = 2
2 × 3 × 5
2 × 29 =
8,700
composite factor = 3 × 29 × 107 =
9,309
composite factor = 2
2 × 5
2 × 107 =
10,700
composite factor = 2
2 × 29 × 107 =
12,412
composite factor = 5 × 29 × 107 =
15,515
composite factor = 2 × 3 × 5
2 × 107 =
16,050
composite factor = 2 × 3 × 29 × 107 =
18,618
composite factor = 2 × 5 × 29 × 107 =
31,030
composite factor = 2
2 × 3 × 5
2 × 107 =
32,100
composite factor = 2
2 × 3 × 29 × 107 =
37,236
composite factor = 3 × 5 × 29 × 107 =
46,545
composite factor = 2
2 × 5 × 29 × 107 =
62,060
composite factor = 5
2 × 29 × 107 =
77,575
composite factor = 2 × 3 × 5 × 29 × 107 =
93,090
composite factor = 2 × 5
2 × 29 × 107 =
155,150
composite factor = 2
2 × 3 × 5 × 29 × 107 =
186,180
composite factor = 3 × 5
2 × 29 × 107 =
232,725
composite factor = 2
2 × 5
2 × 29 × 107 =
310,300
composite factor = 2 × 3 × 5
2 × 29 × 107 =
465,450
composite factor = 2
2 × 3 × 5
2 × 29 × 107 =
930,900
72 factors (divisors)
What times what is 930,900?
What number multiplied by what number equals 930,900?
All the combinations of any two natural numbers whose product equals 930,900.
1 × 930,900 = 930,900
2 × 465,450 = 930,900
3 × 310,300 = 930,900
4 × 232,725 = 930,900
5 × 186,180 = 930,900
6 × 155,150 = 930,900
10 × 93,090 = 930,900
12 × 77,575 = 930,900
15 × 62,060 = 930,900
20 × 46,545 = 930,900
25 × 37,236 = 930,900
29 × 32,100 = 930,900
30 × 31,030 = 930,900
50 × 18,618 = 930,900
58 × 16,050 = 930,900
60 × 15,515 = 930,900
75 × 12,412 = 930,900
87 × 10,700 = 930,900
100 × 9,309 = 930,900
107 × 8,700 = 930,900
116 × 8,025 = 930,900
145 × 6,420 = 930,900
150 × 6,206 = 930,900
174 × 5,350 = 930,900
214 × 4,350 = 930,900
290 × 3,210 = 930,900
300 × 3,103 = 930,900
321 × 2,900 = 930,900
348 × 2,675 = 930,900
428 × 2,175 = 930,900
435 × 2,140 = 930,900
535 × 1,740 = 930,900
580 × 1,605 = 930,900
642 × 1,450 = 930,900
725 × 1,284 = 930,900
870 × 1,070 = 930,900
36 unique multiplications The final answer:
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