A:
Positive:
1 x 1915360129 x 66046941 x 46716189 x 215209181 x 1058211189 x 161092581 x 74213649 x 5249
Negative:
-1 x -19153601-29 x -660469-41 x -467161-89 x -215209-181 x -105821-1189 x -16109-2581 x -7421-3649 x -5249
Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 19,153,601, it is easier to work with a table - it's called factoring from the outside in.
We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.
| 1 | 19,153,601 | |
| -1 | -19,153,601 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 19,153,601.
Example:
1 x 19,153,601 = 19,153,601
and
-1 x -19,153,601 = 19,153,601
Notice both answers equal 19,153,601
With that explanation out of the way, let's continue. Next, we take the number 19,153,601 and divide it by 2:
19,153,601 ÷ 2 = 9,576,800.5
If the quotient is a whole number, then 2 and 9,576,800.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 19,153,601 | |
| -1 | -19,153,601 |
Now, we try dividing 19,153,601 by 3:
19,153,601 ÷ 3 = 6,384,533.6667
If the quotient is a whole number, then 3 and 6,384,533.6667 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 19,153,601 | |
| -1 | -19,153,601 |
Let's try dividing by 4:
19,153,601 ÷ 4 = 4,788,400.25
If the quotient is a whole number, then 4 and 4,788,400.25 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 19,153,601 | |
| -1 | 19,153,601 |
If you did it right, you will end up with this table:
| 1 | 29 | 41 | 89 | 181 | 1,189 | 2,581 | 3,649 | 5,249 | 7,421 | 16,109 | 105,821 | 215,209 | 467,161 | 660,469 | 19,153,601 |
| -1 | -29 | -41 | -89 | -181 | -1,189 | -2,581 | -3,649 | -5,249 | -7,421 | -16,109 | -105,821 | -215,209 | -467,161 | -660,469 | -19,153,601 |
Here are some more numbers to try:
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