LCM for 10, 20 and 35

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What's the Least Common Multiple (LCM) of 10, 20 and 35?

Answer

LCM of 10, 20 and 35 is
140

First common multiples: 140, 280, 420, …

140 is divisible by all three: 140 ÷ 10 = 14, 140 ÷ 20 = 7, 140 ÷ 35 = 4 — and 14, 7 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/10 by 14 and of y/20 by 7 and of z/35 by 4.

10 = 2 × 5

20 = 22 × 5

35 = 5 × 7

Prime102035Highest power
2222—22
55555
7——77

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

LCM = 22 × 5 × 7 = 140

See Also

LCM Table

1st2nd3rdLCM
10202020
102021420
102022220
102023460
102024120
102025100
102026260
102027540
102028140
102029580
10203060
102031620
102032160
102033660
102034340
102035140
102036180
102037740
102038380
102039780
10204040
102041820
102042420
102043860
102044220
102045180
102046460
102047940
102048240
102049980

FAQ

What's the Least Common Multiple (LCM) of 10, 20 and 35?

LCM of 10, 20 and 35 is 140

How to find the LCM of 10, 20 and 35 by prime factorization?

Take every prime that appears in 10, 20 and 35 to the highest power it reaches in any one of them and multiply: 2² × 5 × 7 = 140.

Can you get the LCM of 10, 20 and 35 two numbers at a time?

Yes. The LCM of 10 and 20 is 20, and the LCM of 20 and 35 is 140 — the same answer, because the least common multiple is associative and does not depend on the order of the three numbers.

Is 140 divisible by 10, 20 and 35?

Yes, and by definition it is the smallest positive integer that is: 140 ÷ 10, 140 ÷ 20 and 140 ÷ 35 all come out whole. Any other common multiple of 10, 20 and 35 is a multiple of 140.