5, 7, 9
5 + 7 + 9 = 21
5 x 7 x 9 = 315
They are: 103+105+107 = 315
320
157 and 158.
1,3,5,7,9,15,21,35,45,63,105,315
630
They are: 103+105+107 = 315
There is no solution. 3*5*7 = 105 is too small, and the next three 5*7*9 = 315 is too large.
320
22050
157 and 158.
59, 61,63,65,67
The highest common factor of both numbers is 315
341
1,3,5,7,9,15,21,35,45,63,105,315
630
As a product of its prime factors: 3*3*5*7 = 315 or as 32*5*7 = 315
315 is. Whole numbers can't be reduced.