Factors of 145

The factors of 145 are 1, 5, 29, 145. It has 4 factors.

Factors of 145

Pick any whole number from 1 to 10,000.

145 = 5 \times 29

How to work it out

1
A factor of 145 is a whole number that divides it with nothing left over. You only need to test the numbers up to √145 ≈ 12.04; every one that divides gives a pair.
2
The factor pairs are listed in the table below. Together they give 4 factors.
3
Prime factorisation: keep dividing by the smallest prime that fits.
$145 = 5 \times 29$
4
Add all the factors: 1 + 5 + 29 + 145 = 180. Without 145 itself that is 35, so 145 is a deficient number.

LaTeX source of the formulas on this page

\[ 145 = 5 \times 29 \]

Factor	Pairs with	Product
1	145	1 × 145 = 145
5	29	5 × 29 = 145

What are the factors of 145?

The factors of 145 are 1, 5, 29, 145. It has 4 factors.

What are the prime factors of 145?

5, 29. As a product: 5 × 29.

How many factors does 145 have?

145 has 4 factors (2 factor pairs).

What is the sum of the factors of 145?

180.

Is 145 a prime number?

No. It is divisible by 5, so 145 = 5 × 29.