LCM of 1,2 ..10 by prime factorization method.
2=2
3=3
4 =2x2
5 =5
6 =2x3
7 =7
8 = 2x2x2
9 =3x3
10 = 2x5
LCM(1,2,3, ..10)= 2x2x2x3x3x5x7 = 2520
Hence the least number that is divisible by the numbers from 1 to 10​ is 2520.
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