GCF for 16, 32 and 40

"Greatest Common Factor of 3 Numbers" Calculator

What's the Greatest Common Factor (GCF) of 16, 32 and 40?

Answer

GCF of 16, 32 and 40 is

Common factors: 1, 2, 4, 8

8 divides all three: 16 ÷ 8 = 2, 32 ÷ 8 = 4, 40 ÷ 8 = 5 — and 2, 4 and 5 have no factor but 1 common to all of them, so no larger number divides all three.

16 = 2⁴

32 = 2⁵

40 = 2³ × 5

Prime	16	32	40	Lowest power
2	2⁴	2⁵	2³	2³
5	—	—	5	—

— = power 0: the prime is not a factor of this number, so it cannot be in the GCF.

GCF = 2³ = 8

More with these numbers

Related Calculations

GCF Table

1st	2nd	3rd	GCF
16	25	32	1
16	26	32	2
16	27	32	1
16	28	32	4
16	29	32	1
16	30	32	2
16	31	32	1
16	32	32	16
16	32	33	1
16	32	34	2
16	32	35	1
16	32	36	4
16	32	37	1
16	32	38	2
16	32	39	1
16	32	40	8
16	32	41	1
16	32	42	2
16	32	43	1
16	32	44	4
16	32	45	1
16	32	46	2
16	32	47	1
16	32	48	16
16	32	49	1
16	32	50	2
16	32	51	1
16	32	52	4
16	32	53	1
16	32	54	2

FAQ

What's the Greatest Common Factor (GCF) of 16, 32 and 40?

GCF of 16, 32 and 40 is 8

What prime factors do 16, 32 and 40 share?

All three factorizations contain 2 × 2 × 2, and multiplying those shared primes gives 8 — exactly the greatest common factor.

Can you get the GCF of 16, 32 and 40 two numbers at a time?

Yes. The GCF of 16 and 32 is 16, and the GCF of 16 and 40 is 8 — the same answer, because the greatest common factor is associative and does not depend on the order of the three numbers.

How does the GCF simplify the ratio 16 : 32 : 40?

Divide every term by the GCF 8: 16 ÷ 8 = 2, 32 ÷ 8 = 4 and 40 ÷ 8 = 5. So 16 : 32 : 40 in lowest terms is 2 : 4 : 5, and no whole number other than 1 divides all three of those.

GCF for 16, 32 and 40

What's the Greatest Common Factor (GCF) of 16, 32 and 40?

More with these numbers

Related Calculations

See Also

GCF Table

FAQ

What's the Greatest Common Factor (GCF) of 16, 32 and 40?

What prime factors do 16, 32 and 40 share?

Can you get the GCF of 16, 32 and 40 two numbers at a time?

How does the GCF simplify the ratio 16 : 32 : 40?

See Also

1st	2nd	3rd	GCF
16	25	32	1
16	26	32	2
16	27	32	1
16	28	32	4
16	29	32	1
16	30	32	2
16	31	32	1
16	32	32	16
16	32	33	1
16	32	34	2
16	32	35	1
16	32	36	4
16	32	37	1
16	32	38	2
16	32	39	1
16	32	40	8
16	32	41	1
16	32	42	2
16	32	43	1
16	32	44	4
16	32	45	1
16	32	46	2
16	32	47	1
16	32	48	16
16	32	49	1
16	32	50	2
16	32	51	1
16	32	52	4
16	32	53	1
16	32	54	2

1st	2nd	3rd	GCF
16	25	32	1
16	26	32	2
16	27	32	1
16	28	32	4
16	29	32	1
16	30	32	2
16	31	32	1
16	32	32	16
16	32	33	1
16	32	34	2
16	32	35	1
16	32	36	4
16	32	37	1
16	32	38	2
16	32	39	1
16	32	40	8
16	32	41	1
16	32	42	2
16	32	43	1
16	32	44	4
16	32	45	1
16	32	46	2
16	32	47	1
16	32	48	16
16	32	49	1
16	32	50	2
16	32	51	1
16	32	52	4
16	32	53	1
16	32	54	2

1st	2nd	3rd	GCF
16	25	32	1
16	26	32	2
16	27	32	1
16	28	32	4
16	29	32	1
16	30	32	2
16	31	32	1
16	32	32	16
16	32	33	1
16	32	34	2
16	32	35	1
16	32	36	4
16	32	37	1
16	32	38	2
16	32	39	1
16	32	40	8
16	32	41	1
16	32	42	2
16	32	43	1
16	32	44	4
16	32	45	1
16	32	46	2
16	32	47	1
16	32	48	16
16	32	49	1
16	32	50	2
16	32	51	1
16	32	52	4
16	32	53	1
16	32	54	2