To find all the divisors of the number 69,298,250:
- 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 69,298,250:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
69,298,250 = 2 × 53 × 72 × 5,657
69,298,250 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) × (3 + 1) × (2 + 1) × (1 + 1) = 2 × 4 × 3 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 69,298,250
- 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 =
5
prime factor =
7
composite factor = 2 × 5 =
10
composite factor = 2 × 7 =
14
composite factor = 5
2 =
25
composite factor = 5 × 7 =
35
composite factor = 7
2 =
49
composite factor = 2 × 5
2 =
50
composite factor = 2 × 5 × 7 =
70
composite factor = 2 × 7
2 =
98
composite factor = 5
3 =
125
composite factor = 5
2 × 7 =
175
composite factor = 5 × 7
2 =
245
composite factor = 2 × 5
3 =
250
composite factor = 2 × 5
2 × 7 =
350
composite factor = 2 × 5 × 7
2 =
490
composite factor = 5
3 × 7 =
875
composite factor = 5
2 × 7
2 =
1,225
composite factor = 2 × 5
3 × 7 =
1,750
composite factor = 2 × 5
2 × 7
2 =
2,450
prime factor =
5,657
composite factor = 5
3 × 7
2 =
6,125
This list continues below...
... This list continues from above
composite factor = 2 × 5,657 =
11,314
composite factor = 2 × 5
3 × 7
2 =
12,250
composite factor = 5 × 5,657 =
28,285
composite factor = 7 × 5,657 =
39,599
composite factor = 2 × 5 × 5,657 =
56,570
composite factor = 2 × 7 × 5,657 =
79,198
composite factor = 5
2 × 5,657 =
141,425
composite factor = 5 × 7 × 5,657 =
197,995
composite factor = 7
2 × 5,657 =
277,193
composite factor = 2 × 5
2 × 5,657 =
282,850
composite factor = 2 × 5 × 7 × 5,657 =
395,990
composite factor = 2 × 7
2 × 5,657 =
554,386
composite factor = 5
3 × 5,657 =
707,125
composite factor = 5
2 × 7 × 5,657 =
989,975
composite factor = 5 × 7
2 × 5,657 =
1,385,965
composite factor = 2 × 5
3 × 5,657 =
1,414,250
composite factor = 2 × 5
2 × 7 × 5,657 =
1,979,950
composite factor = 2 × 5 × 7
2 × 5,657 =
2,771,930
composite factor = 5
3 × 7 × 5,657 =
4,949,875
composite factor = 5
2 × 7
2 × 5,657 =
6,929,825
composite factor = 2 × 5
3 × 7 × 5,657 =
9,899,750
composite factor = 2 × 5
2 × 7
2 × 5,657 =
13,859,650
composite factor = 5
3 × 7
2 × 5,657 =
34,649,125
composite factor = 2 × 5
3 × 7
2 × 5,657 =
69,298,250
48 factors (divisors)
What times what is 69,298,250?
What number multiplied by what number equals 69,298,250?
All the combinations of any two natural numbers whose product equals 69,298,250.
1 × 69,298,250 = 69,298,250
2 × 34,649,125 = 69,298,250
5 × 13,859,650 = 69,298,250
7 × 9,899,750 = 69,298,250
10 × 6,929,825 = 69,298,250
14 × 4,949,875 = 69,298,250
25 × 2,771,930 = 69,298,250
35 × 1,979,950 = 69,298,250
49 × 1,414,250 = 69,298,250
50 × 1,385,965 = 69,298,250
70 × 989,975 = 69,298,250
98 × 707,125 = 69,298,250
125 × 554,386 = 69,298,250
175 × 395,990 = 69,298,250
245 × 282,850 = 69,298,250
250 × 277,193 = 69,298,250
350 × 197,995 = 69,298,250
490 × 141,425 = 69,298,250
875 × 79,198 = 69,298,250
1,225 × 56,570 = 69,298,250
1,750 × 39,599 = 69,298,250
2,450 × 28,285 = 69,298,250
5,657 × 12,250 = 69,298,250
6,125 × 11,314 = 69,298,250
24 unique multiplications The final answer:
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