To find all the divisors of the number 7,900,000,010:
- 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 7,900,000,010:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
7,900,000,010 = 2 × 5 × 73 × 31 × 74,297
7,900,000,010 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) × (3 + 1) × (1 + 1) × (1 + 1) = 2 × 2 × 4 × 2 × 2 = 64
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 7,900,000,010
- 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
prime factor =
31
composite factor = 5 × 7 =
35
composite factor = 7
2 =
49
composite factor = 2 × 31 =
62
composite factor = 2 × 5 × 7 =
70
composite factor = 2 × 7
2 =
98
composite factor = 5 × 31 =
155
composite factor = 7 × 31 =
217
composite factor = 5 × 7
2 =
245
composite factor = 2 × 5 × 31 =
310
composite factor = 7
3 =
343
composite factor = 2 × 7 × 31 =
434
composite factor = 2 × 5 × 7
2 =
490
composite factor = 2 × 7
3 =
686
composite factor = 5 × 7 × 31 =
1,085
composite factor = 7
2 × 31 =
1,519
composite factor = 5 × 7
3 =
1,715
composite factor = 2 × 5 × 7 × 31 =
2,170
composite factor = 2 × 7
2 × 31 =
3,038
composite factor = 2 × 5 × 7
3 =
3,430
composite factor = 5 × 7
2 × 31 =
7,595
composite factor = 7
3 × 31 =
10,633
composite factor = 2 × 5 × 7
2 × 31 =
15,190
composite factor = 2 × 7
3 × 31 =
21,266
composite factor = 5 × 7
3 × 31 =
53,165
prime factor =
74,297
This list continues below...
... This list continues from above
composite factor = 2 × 5 × 7
3 × 31 =
106,330
composite factor = 2 × 74,297 =
148,594
composite factor = 5 × 74,297 =
371,485
composite factor = 7 × 74,297 =
520,079
composite factor = 2 × 5 × 74,297 =
742,970
composite factor = 2 × 7 × 74,297 =
1,040,158
composite factor = 31 × 74,297 =
2,303,207
composite factor = 5 × 7 × 74,297 =
2,600,395
composite factor = 7
2 × 74,297 =
3,640,553
composite factor = 2 × 31 × 74,297 =
4,606,414
composite factor = 2 × 5 × 7 × 74,297 =
5,200,790
composite factor = 2 × 7
2 × 74,297 =
7,281,106
composite factor = 5 × 31 × 74,297 =
11,516,035
composite factor = 7 × 31 × 74,297 =
16,122,449
composite factor = 5 × 7
2 × 74,297 =
18,202,765
composite factor = 2 × 5 × 31 × 74,297 =
23,032,070
composite factor = 7
3 × 74,297 =
25,483,871
composite factor = 2 × 7 × 31 × 74,297 =
32,244,898
composite factor = 2 × 5 × 7
2 × 74,297 =
36,405,530
composite factor = 2 × 7
3 × 74,297 =
50,967,742
composite factor = 5 × 7 × 31 × 74,297 =
80,612,245
composite factor = 7
2 × 31 × 74,297 =
112,857,143
composite factor = 5 × 7
3 × 74,297 =
127,419,355
composite factor = 2 × 5 × 7 × 31 × 74,297 =
161,224,490
composite factor = 2 × 7
2 × 31 × 74,297 =
225,714,286
composite factor = 2 × 5 × 7
3 × 74,297 =
254,838,710
composite factor = 5 × 7
2 × 31 × 74,297 =
564,285,715
composite factor = 7
3 × 31 × 74,297 =
790,000,001
composite factor = 2 × 5 × 7
2 × 31 × 74,297 =
1,128,571,430
composite factor = 2 × 7
3 × 31 × 74,297 =
1,580,000,002
composite factor = 5 × 7
3 × 31 × 74,297 =
3,950,000,005
composite factor = 2 × 5 × 7
3 × 31 × 74,297 =
7,900,000,010
64 factors (divisors)
What times what is 7,900,000,010?
What number multiplied by what number equals 7,900,000,010?
All the combinations of any two natural numbers whose product equals 7,900,000,010.
1 × 7,900,000,010 = 7,900,000,010
2 × 3,950,000,005 = 7,900,000,010
5 × 1,580,000,002 = 7,900,000,010
7 × 1,128,571,430 = 7,900,000,010
10 × 790,000,001 = 7,900,000,010
14 × 564,285,715 = 7,900,000,010
31 × 254,838,710 = 7,900,000,010
35 × 225,714,286 = 7,900,000,010
49 × 161,224,490 = 7,900,000,010
62 × 127,419,355 = 7,900,000,010
70 × 112,857,143 = 7,900,000,010
98 × 80,612,245 = 7,900,000,010
155 × 50,967,742 = 7,900,000,010
217 × 36,405,530 = 7,900,000,010
245 × 32,244,898 = 7,900,000,010
310 × 25,483,871 = 7,900,000,010
343 × 23,032,070 = 7,900,000,010
434 × 18,202,765 = 7,900,000,010
490 × 16,122,449 = 7,900,000,010
686 × 11,516,035 = 7,900,000,010
1,085 × 7,281,106 = 7,900,000,010
1,519 × 5,200,790 = 7,900,000,010
1,715 × 4,606,414 = 7,900,000,010
2,170 × 3,640,553 = 7,900,000,010
3,038 × 2,600,395 = 7,900,000,010
3,430 × 2,303,207 = 7,900,000,010
7,595 × 1,040,158 = 7,900,000,010
10,633 × 742,970 = 7,900,000,010
15,190 × 520,079 = 7,900,000,010
21,266 × 371,485 = 7,900,000,010
53,165 × 148,594 = 7,900,000,010
74,297 × 106,330 = 7,900,000,010
32 unique multiplications The final answer:
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