A:
Positive:
1 x 2585704555 x 5171409111 x 2350640513 x 1989003555 x 470128165 x 3978007143 x 1808185715 x 361637
Negative:
-1 x -258570455-5 x -51714091-11 x -23506405-13 x -19890035-55 x -4701281-65 x -3978007-143 x -1808185-715 x -361637
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 258,570,455, 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 | 258,570,455 | |
| -1 | -258,570,455 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 258,570,455.
Example:
1 x 258,570,455 = 258,570,455
and
-1 x -258,570,455 = 258,570,455
Notice both answers equal 258,570,455
With that explanation out of the way, let's continue. Next, we take the number 258,570,455 and divide it by 2:
258,570,455 ÷ 2 = 129,285,227.5
If the quotient is a whole number, then 2 and 129,285,227.5 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 | 258,570,455 | |
| -1 | -258,570,455 |
Now, we try dividing 258,570,455 by 3:
258,570,455 ÷ 3 = 86,190,151.6667
If the quotient is a whole number, then 3 and 86,190,151.6667 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 | 258,570,455 | |
| -1 | -258,570,455 |
Let's try dividing by 4:
258,570,455 ÷ 4 = 64,642,613.75
If the quotient is a whole number, then 4 and 64,642,613.75 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 | 258,570,455 | |
| -1 | 258,570,455 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 13 | 55 | 65 | 143 | 715 | 361,637 | 1,808,185 | 3,978,007 | 4,701,281 | 19,890,035 | 23,506,405 | 51,714,091 | 258,570,455 |
| -1 | -5 | -11 | -13 | -55 | -65 | -143 | -715 | -361,637 | -1,808,185 | -3,978,007 | -4,701,281 | -19,890,035 | -23,506,405 | -51,714,091 | -258,570,455 |
Here are some more numbers to try:
Try the factor calculator