LCM for 2, 16 and 20

"Least Common Multiple of 3 Numbers" Calculator

What's the Least Common Multiple (LCM) of 2, 16 and 20?

Answer

LCM of 2, 16 and 20 is

First common multiples: 80, 160, 240, …

80 is divisible by all three: 80 ÷ 2 = 40, 80 ÷ 16 = 5, 80 ÷ 20 = 4 — and 40, 5 and 4 have no factor but 1 common to all of them, so no smaller number is. As a common denominator: multiply the top and bottom of x/2 by 40 and of y/16 by 5 and of z/20 by 4.

2 — prime

16 = 2⁴

20 = 2² × 5

Prime	2	16	20	Highest power
2	2	2⁴	2²	2⁴
5	—	—	5	5

— = power 0: the prime is not a factor of this number; the LCM takes it from the number that has it.

LCM = 2⁴ × 5 = 80

More with these numbers

Related Calculations

LCM Table

1st	2nd	3rd	LCM
2	5	16	80
2	6	16	48
2	7	16	112
2	8	16	16
2	9	16	144
2	10	16	80
2	11	16	176
2	12	16	48
2	13	16	208
2	14	16	112
2	15	16	240
2	16	16	16
2	16	17	272
2	16	18	144
2	16	19	304
2	16	20	80
2	16	21	336
2	16	22	176
2	16	23	368
2	16	24	48
2	16	25	400
2	16	26	208
2	16	27	432
2	16	28	112
2	16	29	464
2	16	30	240
2	16	31	496
2	16	32	32
2	16	33	528
2	16	34	272

FAQ

What's the Least Common Multiple (LCM) of 2, 16 and 20?

LCM of 2, 16 and 20 is 80

How to find the LCM of 2, 16 and 20 by prime factorization?

Take every prime that appears in 2, 16 and 20 to the highest power it reaches in any one of them and multiply: 2⁴ × 5 = 80.

Can you get the LCM of 2, 16 and 20 two numbers at a time?

Yes. The LCM of 2 and 16 is 16, and the LCM of 16 and 20 is 80 — the same answer, because the least common multiple is associative and does not depend on the order of the three numbers.

Is 80 divisible by 2, 16 and 20?

Yes, and by definition it is the smallest positive integer that is: 80 ÷ 2, 80 ÷ 16 and 80 ÷ 20 all come out whole. Any other common multiple of 2, 16 and 20 is a multiple of 80.

LCM for 2, 16 and 20

What's the Least Common Multiple (LCM) of 2, 16 and 20?

More with these numbers

Related Calculations

See Also

LCM Table

FAQ

What's the Least Common Multiple (LCM) of 2, 16 and 20?

How to find the LCM of 2, 16 and 20 by prime factorization?

Can you get the LCM of 2, 16 and 20 two numbers at a time?

Is 80 divisible by 2, 16 and 20?

See Also

1st	2nd	3rd	LCM
2	5	16	80
2	6	16	48
2	7	16	112
2	8	16	16
2	9	16	144
2	10	16	80
2	11	16	176
2	12	16	48
2	13	16	208
2	14	16	112
2	15	16	240
2	16	16	16
2	16	17	272
2	16	18	144
2	16	19	304
2	16	20	80
2	16	21	336
2	16	22	176
2	16	23	368
2	16	24	48
2	16	25	400
2	16	26	208
2	16	27	432
2	16	28	112
2	16	29	464
2	16	30	240
2	16	31	496
2	16	32	32
2	16	33	528
2	16	34	272

1st	2nd	3rd	LCM
2	5	16	80
2	6	16	48
2	7	16	112
2	8	16	16
2	9	16	144
2	10	16	80
2	11	16	176
2	12	16	48
2	13	16	208
2	14	16	112
2	15	16	240
2	16	16	16
2	16	17	272
2	16	18	144
2	16	19	304
2	16	20	80
2	16	21	336
2	16	22	176
2	16	23	368
2	16	24	48
2	16	25	400
2	16	26	208
2	16	27	432
2	16	28	112
2	16	29	464
2	16	30	240
2	16	31	496
2	16	32	32
2	16	33	528
2	16	34	272

1st	2nd	3rd	LCM
2	5	16	80
2	6	16	48
2	7	16	112
2	8	16	16
2	9	16	144
2	10	16	80
2	11	16	176
2	12	16	48
2	13	16	208
2	14	16	112
2	15	16	240
2	16	16	16
2	16	17	272
2	16	18	144
2	16	19	304
2	16	20	80
2	16	21	336
2	16	22	176
2	16	23	368
2	16	24	48
2	16	25	400
2	16	26	208
2	16	27	432
2	16	28	112
2	16	29	464
2	16	30	240
2	16	31	496
2	16	32	32
2	16	33	528
2	16	34	272