To find all the divisors of the number 150,150:
- 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 150,150:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
150,150 = 2 × 3 × 52 × 7 × 11 × 13
150,150 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) × (1 + 1) × (2 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 2 × 2 × 3 × 2 × 2 × 2 = 96
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 150,150
- 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
prime factor =
5
composite factor = 2 × 3 =
6
prime factor =
7
composite factor = 2 × 5 =
10
prime factor =
11
prime factor =
13
composite factor = 2 × 7 =
14
composite factor = 3 × 5 =
15
composite factor = 3 × 7 =
21
composite factor = 2 × 11 =
22
composite factor = 5
2 =
25
composite factor = 2 × 13 =
26
composite factor = 2 × 3 × 5 =
30
composite factor = 3 × 11 =
33
composite factor = 5 × 7 =
35
composite factor = 3 × 13 =
39
composite factor = 2 × 3 × 7 =
42
composite factor = 2 × 5
2 =
50
composite factor = 5 × 11 =
55
composite factor = 5 × 13 =
65
composite factor = 2 × 3 × 11 =
66
composite factor = 2 × 5 × 7 =
70
composite factor = 3 × 5
2 =
75
composite factor = 7 × 11 =
77
composite factor = 2 × 3 × 13 =
78
composite factor = 7 × 13 =
91
composite factor = 3 × 5 × 7 =
105
composite factor = 2 × 5 × 11 =
110
composite factor = 2 × 5 × 13 =
130
composite factor = 11 × 13 =
143
composite factor = 2 × 3 × 5
2 =
150
composite factor = 2 × 7 × 11 =
154
composite factor = 3 × 5 × 11 =
165
composite factor = 5
2 × 7 =
175
composite factor = 2 × 7 × 13 =
182
composite factor = 3 × 5 × 13 =
195
composite factor = 2 × 3 × 5 × 7 =
210
composite factor = 3 × 7 × 11 =
231
composite factor = 3 × 7 × 13 =
273
composite factor = 5
2 × 11 =
275
composite factor = 2 × 11 × 13 =
286
composite factor = 5
2 × 13 =
325
composite factor = 2 × 3 × 5 × 11 =
330
composite factor = 2 × 5
2 × 7 =
350
composite factor = 5 × 7 × 11 =
385
This list continues below...
... This list continues from above
composite factor = 2 × 3 × 5 × 13 =
390
composite factor = 3 × 11 × 13 =
429
composite factor = 5 × 7 × 13 =
455
composite factor = 2 × 3 × 7 × 11 =
462
composite factor = 3 × 5
2 × 7 =
525
composite factor = 2 × 3 × 7 × 13 =
546
composite factor = 2 × 5
2 × 11 =
550
composite factor = 2 × 5
2 × 13 =
650
composite factor = 5 × 11 × 13 =
715
composite factor = 2 × 5 × 7 × 11 =
770
composite factor = 3 × 5
2 × 11 =
825
composite factor = 2 × 3 × 11 × 13 =
858
composite factor = 2 × 5 × 7 × 13 =
910
composite factor = 3 × 5
2 × 13 =
975
composite factor = 7 × 11 × 13 =
1,001
composite factor = 2 × 3 × 5
2 × 7 =
1,050
composite factor = 3 × 5 × 7 × 11 =
1,155
composite factor = 3 × 5 × 7 × 13 =
1,365
composite factor = 2 × 5 × 11 × 13 =
1,430
composite factor = 2 × 3 × 5
2 × 11 =
1,650
composite factor = 5
2 × 7 × 11 =
1,925
composite factor = 2 × 3 × 5
2 × 13 =
1,950
composite factor = 2 × 7 × 11 × 13 =
2,002
composite factor = 3 × 5 × 11 × 13 =
2,145
composite factor = 5
2 × 7 × 13 =
2,275
composite factor = 2 × 3 × 5 × 7 × 11 =
2,310
composite factor = 2 × 3 × 5 × 7 × 13 =
2,730
composite factor = 3 × 7 × 11 × 13 =
3,003
composite factor = 5
2 × 11 × 13 =
3,575
composite factor = 2 × 5
2 × 7 × 11 =
3,850
composite factor = 2 × 3 × 5 × 11 × 13 =
4,290
composite factor = 2 × 5
2 × 7 × 13 =
4,550
composite factor = 5 × 7 × 11 × 13 =
5,005
composite factor = 3 × 5
2 × 7 × 11 =
5,775
composite factor = 2 × 3 × 7 × 11 × 13 =
6,006
composite factor = 3 × 5
2 × 7 × 13 =
6,825
composite factor = 2 × 5
2 × 11 × 13 =
7,150
composite factor = 2 × 5 × 7 × 11 × 13 =
10,010
composite factor = 3 × 5
2 × 11 × 13 =
10,725
composite factor = 2 × 3 × 5
2 × 7 × 11 =
11,550
composite factor = 2 × 3 × 5
2 × 7 × 13 =
13,650
composite factor = 3 × 5 × 7 × 11 × 13 =
15,015
composite factor = 2 × 3 × 5
2 × 11 × 13 =
21,450
composite factor = 5
2 × 7 × 11 × 13 =
25,025
composite factor = 2 × 3 × 5 × 7 × 11 × 13 =
30,030
composite factor = 2 × 5
2 × 7 × 11 × 13 =
50,050
composite factor = 3 × 5
2 × 7 × 11 × 13 =
75,075
composite factor = 2 × 3 × 5
2 × 7 × 11 × 13 =
150,150
96 factors (divisors)
What times what is 150,150?
What number multiplied by what number equals 150,150?
All the combinations of any two natural numbers whose product equals 150,150.
1 × 150,150 = 150,150
2 × 75,075 = 150,150
3 × 50,050 = 150,150
5 × 30,030 = 150,150
6 × 25,025 = 150,150
7 × 21,450 = 150,150
10 × 15,015 = 150,150
11 × 13,650 = 150,150
13 × 11,550 = 150,150
14 × 10,725 = 150,150
15 × 10,010 = 150,150
21 × 7,150 = 150,150
22 × 6,825 = 150,150
25 × 6,006 = 150,150
26 × 5,775 = 150,150
30 × 5,005 = 150,150
33 × 4,550 = 150,150
35 × 4,290 = 150,150
39 × 3,850 = 150,150
42 × 3,575 = 150,150
50 × 3,003 = 150,150
55 × 2,730 = 150,150
65 × 2,310 = 150,150
66 × 2,275 = 150,150
70 × 2,145 = 150,150
75 × 2,002 = 150,150
77 × 1,950 = 150,150
78 × 1,925 = 150,150
91 × 1,650 = 150,150
105 × 1,430 = 150,150
110 × 1,365 = 150,150
130 × 1,155 = 150,150
143 × 1,050 = 150,150
150 × 1,001 = 150,150
154 × 975 = 150,150
165 × 910 = 150,150
175 × 858 = 150,150
182 × 825 = 150,150
195 × 770 = 150,150
210 × 715 = 150,150
231 × 650 = 150,150
273 × 550 = 150,150
275 × 546 = 150,150
286 × 525 = 150,150
325 × 462 = 150,150
330 × 455 = 150,150
350 × 429 = 150,150
385 × 390 = 150,150
48 unique multiplications The final answer:
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