To find all the divisors of the number 1,000,000,976:
- 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 1,000,000,976:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
1,000,000,976 = 24 × 13 × 31 × 155,087
1,000,000,976 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 = (4 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 5 × 2 × 2 × 2 = 40
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 1,000,000,976
- 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
composite factor = 2
2 =
4
composite factor = 2
3 =
8
prime factor =
13
composite factor = 2
4 =
16
composite factor = 2 × 13 =
26
prime factor =
31
composite factor = 2
2 × 13 =
52
composite factor = 2 × 31 =
62
composite factor = 2
3 × 13 =
104
composite factor = 2
2 × 31 =
124
composite factor = 2
4 × 13 =
208
composite factor = 2
3 × 31 =
248
composite factor = 13 × 31 =
403
composite factor = 2
4 × 31 =
496
composite factor = 2 × 13 × 31 =
806
composite factor = 2
2 × 13 × 31 =
1,612
composite factor = 2
3 × 13 × 31 =
3,224
composite factor = 2
4 × 13 × 31 =
6,448
This list continues below...
... This list continues from above
prime factor =
155,087
composite factor = 2 × 155,087 =
310,174
composite factor = 2
2 × 155,087 =
620,348
composite factor = 2
3 × 155,087 =
1,240,696
composite factor = 13 × 155,087 =
2,016,131
composite factor = 2
4 × 155,087 =
2,481,392
composite factor = 2 × 13 × 155,087 =
4,032,262
composite factor = 31 × 155,087 =
4,807,697
composite factor = 2
2 × 13 × 155,087 =
8,064,524
composite factor = 2 × 31 × 155,087 =
9,615,394
composite factor = 2
3 × 13 × 155,087 =
16,129,048
composite factor = 2
2 × 31 × 155,087 =
19,230,788
composite factor = 2
4 × 13 × 155,087 =
32,258,096
composite factor = 2
3 × 31 × 155,087 =
38,461,576
composite factor = 13 × 31 × 155,087 =
62,500,061
composite factor = 2
4 × 31 × 155,087 =
76,923,152
composite factor = 2 × 13 × 31 × 155,087 =
125,000,122
composite factor = 2
2 × 13 × 31 × 155,087 =
250,000,244
composite factor = 2
3 × 13 × 31 × 155,087 =
500,000,488
composite factor = 2
4 × 13 × 31 × 155,087 =
1,000,000,976
40 factors (divisors)
What times what is 1,000,000,976?
What number multiplied by what number equals 1,000,000,976?
All the combinations of any two natural numbers whose product equals 1,000,000,976.
1 × 1,000,000,976 = 1,000,000,976
2 × 500,000,488 = 1,000,000,976
4 × 250,000,244 = 1,000,000,976
8 × 125,000,122 = 1,000,000,976
13 × 76,923,152 = 1,000,000,976
16 × 62,500,061 = 1,000,000,976
26 × 38,461,576 = 1,000,000,976
31 × 32,258,096 = 1,000,000,976
52 × 19,230,788 = 1,000,000,976
62 × 16,129,048 = 1,000,000,976
104 × 9,615,394 = 1,000,000,976
124 × 8,064,524 = 1,000,000,976
208 × 4,807,697 = 1,000,000,976
248 × 4,032,262 = 1,000,000,976
403 × 2,481,392 = 1,000,000,976
496 × 2,016,131 = 1,000,000,976
806 × 1,240,696 = 1,000,000,976
1,612 × 620,348 = 1,000,000,976
3,224 × 310,174 = 1,000,000,976
6,448 × 155,087 = 1,000,000,976
20 unique multiplications The final answer:
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