A:
Positive:
1 x 13052026131 x 421033141 x 3183421103 x 1267187997 x 1309131271 x 1026913193 x 408774223 x 30907
Negative:
-1 x -130520261-31 x -4210331-41 x -3183421-103 x -1267187-997 x -130913-1271 x -102691-3193 x -40877-4223 x -30907
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 130,520,261, 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 | 130,520,261 | |
| -1 | -130,520,261 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 130,520,261.
Example:
1 x 130,520,261 = 130,520,261
and
-1 x -130,520,261 = 130,520,261
Notice both answers equal 130,520,261
With that explanation out of the way, let's continue. Next, we take the number 130,520,261 and divide it by 2:
130,520,261 ÷ 2 = 65,260,130.5
If the quotient is a whole number, then 2 and 65,260,130.5 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 | 130,520,261 | |
| -1 | -130,520,261 |
Now, we try dividing 130,520,261 by 3:
130,520,261 ÷ 3 = 43,506,753.6667
If the quotient is a whole number, then 3 and 43,506,753.6667 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 | 130,520,261 | |
| -1 | -130,520,261 |
Let's try dividing by 4:
130,520,261 ÷ 4 = 32,630,065.25
If the quotient is a whole number, then 4 and 32,630,065.25 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 | 130,520,261 | |
| -1 | 130,520,261 |
If you did it right, you will end up with this table:
| 1 | 31 | 41 | 103 | 997 | 1,271 | 3,193 | 4,223 | 30,907 | 40,877 | 102,691 | 130,913 | 1,267,187 | 3,183,421 | 4,210,331 | 130,520,261 |
| -1 | -31 | -41 | -103 | -997 | -1,271 | -3,193 | -4,223 | -30,907 | -40,877 | -102,691 | -130,913 | -1,267,187 | -3,183,421 | -4,210,331 | -130,520,261 |
Here are some more numbers to try:
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