LCM for 4, 8 and 40
"Least Common Multiple of 3 Numbers" Calculator
What's the Least Common Multiple (LCM) of 4, 8 and 40?
Answer
LCM of 4, 8 and 40 is
40
First common multiples: 40, 80, 120, …
40 is divisible by all three: 40 ÷ 4 = 10, 40 ÷ 8 = 5, 40 ÷ 40 = 1 — and 10, 5 and 1 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/4 by 10 and of y/8 by 5.
4 = 22
8 = 23
40 = 23 × 5
| Prime | 4 | 8 | 40 | Highest power |
|---|---|---|---|---|
| 2 | 22 | 23 | 23 | 23 |
| 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 = 23 × 5 = 40
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See Also
- Greatest Common Factor of 3 Numbers - Find the Greatest Common Factor (GCF) of three numbers
- Least Common Multiple - Find the Least Common Multiple (LCM) of two numbers
- Greatest Common Factor - Find the Greatest Common Factor (GCF) of two numbers
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LCM Table
| 1st | 2nd | 3rd | LCM |
|---|---|---|---|
| 4 | 8 | 25 | 200 |
| 4 | 8 | 26 | 104 |
| 4 | 8 | 27 | 216 |
| 4 | 8 | 28 | 56 |
| 4 | 8 | 29 | 232 |
| 4 | 8 | 30 | 120 |
| 4 | 8 | 31 | 248 |
| 4 | 8 | 32 | 32 |
| 4 | 8 | 33 | 264 |
| 4 | 8 | 34 | 136 |
| 4 | 8 | 35 | 280 |
| 4 | 8 | 36 | 72 |
| 4 | 8 | 37 | 296 |
| 4 | 8 | 38 | 152 |
| 4 | 8 | 39 | 312 |
| 4 | 8 | 40 | 40 |
| 4 | 8 | 41 | 328 |
| 4 | 8 | 42 | 168 |
| 4 | 8 | 43 | 344 |
| 4 | 8 | 44 | 88 |
| 4 | 8 | 45 | 360 |
| 4 | 8 | 46 | 184 |
| 4 | 8 | 47 | 376 |
| 4 | 8 | 48 | 48 |
| 4 | 8 | 49 | 392 |
| 4 | 8 | 50 | 200 |
| 4 | 8 | 51 | 408 |
| 4 | 8 | 52 | 104 |
| 4 | 8 | 53 | 424 |
| 4 | 8 | 54 | 216 |