To find all the divisors of the number 260,700:
- 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 260,700:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
260,700 = 22 × 3 × 52 × 11 × 79
260,700 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 260,700
- 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
prime factor =
11
composite factor = 2
2 × 3 =
12
composite factor = 3 × 5 =
15
composite factor = 2
2 × 5 =
20
composite factor = 2 × 11 =
22
composite factor = 5
2 =
25
composite factor = 2 × 3 × 5 =
30
composite factor = 3 × 11 =
33
composite factor = 2
2 × 11 =
44
composite factor = 2 × 5
2 =
50
composite factor = 5 × 11 =
55
composite factor = 2
2 × 3 × 5 =
60
composite factor = 2 × 3 × 11 =
66
composite factor = 3 × 5
2 =
75
prime factor =
79
composite factor = 2
2 × 5
2 =
100
composite factor = 2 × 5 × 11 =
110
composite factor = 2
2 × 3 × 11 =
132
composite factor = 2 × 3 × 5
2 =
150
composite factor = 2 × 79 =
158
composite factor = 3 × 5 × 11 =
165
composite factor = 2
2 × 5 × 11 =
220
composite factor = 3 × 79 =
237
composite factor = 5
2 × 11 =
275
composite factor = 2
2 × 3 × 5
2 =
300
composite factor = 2
2 × 79 =
316
composite factor = 2 × 3 × 5 × 11 =
330
composite factor = 5 × 79 =
395
composite factor = 2 × 3 × 79 =
474
This list continues below...
... This list continues from above
composite factor = 2 × 5
2 × 11 =
550
composite factor = 2
2 × 3 × 5 × 11 =
660
composite factor = 2 × 5 × 79 =
790
composite factor = 3 × 5
2 × 11 =
825
composite factor = 11 × 79 =
869
composite factor = 2
2 × 3 × 79 =
948
composite factor = 2
2 × 5
2 × 11 =
1,100
composite factor = 3 × 5 × 79 =
1,185
composite factor = 2
2 × 5 × 79 =
1,580
composite factor = 2 × 3 × 5
2 × 11 =
1,650
composite factor = 2 × 11 × 79 =
1,738
composite factor = 5
2 × 79 =
1,975
composite factor = 2 × 3 × 5 × 79 =
2,370
composite factor = 3 × 11 × 79 =
2,607
composite factor = 2
2 × 3 × 5
2 × 11 =
3,300
composite factor = 2
2 × 11 × 79 =
3,476
composite factor = 2 × 5
2 × 79 =
3,950
composite factor = 5 × 11 × 79 =
4,345
composite factor = 2
2 × 3 × 5 × 79 =
4,740
composite factor = 2 × 3 × 11 × 79 =
5,214
composite factor = 3 × 5
2 × 79 =
5,925
composite factor = 2
2 × 5
2 × 79 =
7,900
composite factor = 2 × 5 × 11 × 79 =
8,690
composite factor = 2
2 × 3 × 11 × 79 =
10,428
composite factor = 2 × 3 × 5
2 × 79 =
11,850
composite factor = 3 × 5 × 11 × 79 =
13,035
composite factor = 2
2 × 5 × 11 × 79 =
17,380
composite factor = 5
2 × 11 × 79 =
21,725
composite factor = 2
2 × 3 × 5
2 × 79 =
23,700
composite factor = 2 × 3 × 5 × 11 × 79 =
26,070
composite factor = 2 × 5
2 × 11 × 79 =
43,450
composite factor = 2
2 × 3 × 5 × 11 × 79 =
52,140
composite factor = 3 × 5
2 × 11 × 79 =
65,175
composite factor = 2
2 × 5
2 × 11 × 79 =
86,900
composite factor = 2 × 3 × 5
2 × 11 × 79 =
130,350
composite factor = 2
2 × 3 × 5
2 × 11 × 79 =
260,700
72 factors (divisors)
What times what is 260,700?
What number multiplied by what number equals 260,700?
All the combinations of any two natural numbers whose product equals 260,700.
1 × 260,700 = 260,700
2 × 130,350 = 260,700
3 × 86,900 = 260,700
4 × 65,175 = 260,700
5 × 52,140 = 260,700
6 × 43,450 = 260,700
10 × 26,070 = 260,700
11 × 23,700 = 260,700
12 × 21,725 = 260,700
15 × 17,380 = 260,700
20 × 13,035 = 260,700
22 × 11,850 = 260,700
25 × 10,428 = 260,700
30 × 8,690 = 260,700
33 × 7,900 = 260,700
44 × 5,925 = 260,700
50 × 5,214 = 260,700
55 × 4,740 = 260,700
60 × 4,345 = 260,700
66 × 3,950 = 260,700
75 × 3,476 = 260,700
79 × 3,300 = 260,700
100 × 2,607 = 260,700
110 × 2,370 = 260,700
132 × 1,975 = 260,700
150 × 1,738 = 260,700
158 × 1,650 = 260,700
165 × 1,580 = 260,700
220 × 1,185 = 260,700
237 × 1,100 = 260,700
275 × 948 = 260,700
300 × 869 = 260,700
316 × 825 = 260,700
330 × 790 = 260,700
395 × 660 = 260,700
474 × 550 = 260,700
36 unique multiplications The final answer:
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