To find all the divisors of the number 172,224:
- 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 172,224:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
172,224 = 26 × 32 × 13 × 23
172,224 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 = (6 + 1) × (2 + 1) × (1 + 1) × (1 + 1) = 7 × 3 × 2 × 2 = 84
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 172,224
- 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
composite factor = 2 × 3 =
6
composite factor = 2
3 =
8
composite factor = 3
2 =
9
composite factor = 2
2 × 3 =
12
prime factor =
13
composite factor = 2
4 =
16
composite factor = 2 × 3
2 =
18
prime factor =
23
composite factor = 2
3 × 3 =
24
composite factor = 2 × 13 =
26
composite factor = 2
5 =
32
composite factor = 2
2 × 3
2 =
36
composite factor = 3 × 13 =
39
composite factor = 2 × 23 =
46
composite factor = 2
4 × 3 =
48
composite factor = 2
2 × 13 =
52
composite factor = 2
6 =
64
composite factor = 3 × 23 =
69
composite factor = 2
3 × 3
2 =
72
composite factor = 2 × 3 × 13 =
78
composite factor = 2
2 × 23 =
92
composite factor = 2
5 × 3 =
96
composite factor = 2
3 × 13 =
104
composite factor = 3
2 × 13 =
117
composite factor = 2 × 3 × 23 =
138
composite factor = 2
4 × 3
2 =
144
composite factor = 2
2 × 3 × 13 =
156
composite factor = 2
3 × 23 =
184
composite factor = 2
6 × 3 =
192
composite factor = 3
2 × 23 =
207
composite factor = 2
4 × 13 =
208
composite factor = 2 × 3
2 × 13 =
234
composite factor = 2
2 × 3 × 23 =
276
composite factor = 2
5 × 3
2 =
288
composite factor = 13 × 23 =
299
composite factor = 2
3 × 3 × 13 =
312
composite factor = 2
4 × 23 =
368
composite factor = 2 × 3
2 × 23 =
414
This list continues below...
... This list continues from above
composite factor = 2
5 × 13 =
416
composite factor = 2
2 × 3
2 × 13 =
468
composite factor = 2
3 × 3 × 23 =
552
composite factor = 2
6 × 3
2 =
576
composite factor = 2 × 13 × 23 =
598
composite factor = 2
4 × 3 × 13 =
624
composite factor = 2
5 × 23 =
736
composite factor = 2
2 × 3
2 × 23 =
828
composite factor = 2
6 × 13 =
832
composite factor = 3 × 13 × 23 =
897
composite factor = 2
3 × 3
2 × 13 =
936
composite factor = 2
4 × 3 × 23 =
1,104
composite factor = 2
2 × 13 × 23 =
1,196
composite factor = 2
5 × 3 × 13 =
1,248
composite factor = 2
6 × 23 =
1,472
composite factor = 2
3 × 3
2 × 23 =
1,656
composite factor = 2 × 3 × 13 × 23 =
1,794
composite factor = 2
4 × 3
2 × 13 =
1,872
composite factor = 2
5 × 3 × 23 =
2,208
composite factor = 2
3 × 13 × 23 =
2,392
composite factor = 2
6 × 3 × 13 =
2,496
composite factor = 3
2 × 13 × 23 =
2,691
composite factor = 2
4 × 3
2 × 23 =
3,312
composite factor = 2
2 × 3 × 13 × 23 =
3,588
composite factor = 2
5 × 3
2 × 13 =
3,744
composite factor = 2
6 × 3 × 23 =
4,416
composite factor = 2
4 × 13 × 23 =
4,784
composite factor = 2 × 3
2 × 13 × 23 =
5,382
composite factor = 2
5 × 3
2 × 23 =
6,624
composite factor = 2
3 × 3 × 13 × 23 =
7,176
composite factor = 2
6 × 3
2 × 13 =
7,488
composite factor = 2
5 × 13 × 23 =
9,568
composite factor = 2
2 × 3
2 × 13 × 23 =
10,764
composite factor = 2
6 × 3
2 × 23 =
13,248
composite factor = 2
4 × 3 × 13 × 23 =
14,352
composite factor = 2
6 × 13 × 23 =
19,136
composite factor = 2
3 × 3
2 × 13 × 23 =
21,528
composite factor = 2
5 × 3 × 13 × 23 =
28,704
composite factor = 2
4 × 3
2 × 13 × 23 =
43,056
composite factor = 2
6 × 3 × 13 × 23 =
57,408
composite factor = 2
5 × 3
2 × 13 × 23 =
86,112
composite factor = 2
6 × 3
2 × 13 × 23 =
172,224
84 factors (divisors)
What times what is 172,224?
What number multiplied by what number equals 172,224?
All the combinations of any two natural numbers whose product equals 172,224.
1 × 172,224 = 172,224
2 × 86,112 = 172,224
3 × 57,408 = 172,224
4 × 43,056 = 172,224
6 × 28,704 = 172,224
8 × 21,528 = 172,224
9 × 19,136 = 172,224
12 × 14,352 = 172,224
13 × 13,248 = 172,224
16 × 10,764 = 172,224
18 × 9,568 = 172,224
23 × 7,488 = 172,224
24 × 7,176 = 172,224
26 × 6,624 = 172,224
32 × 5,382 = 172,224
36 × 4,784 = 172,224
39 × 4,416 = 172,224
46 × 3,744 = 172,224
48 × 3,588 = 172,224
52 × 3,312 = 172,224
64 × 2,691 = 172,224
69 × 2,496 = 172,224
72 × 2,392 = 172,224
78 × 2,208 = 172,224
92 × 1,872 = 172,224
96 × 1,794 = 172,224
104 × 1,656 = 172,224
117 × 1,472 = 172,224
138 × 1,248 = 172,224
144 × 1,196 = 172,224
156 × 1,104 = 172,224
184 × 936 = 172,224
192 × 897 = 172,224
207 × 832 = 172,224
208 × 828 = 172,224
234 × 736 = 172,224
276 × 624 = 172,224
288 × 598 = 172,224
299 × 576 = 172,224
312 × 552 = 172,224
368 × 468 = 172,224
414 × 416 = 172,224
42 unique multiplications The final answer:
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