If you follow the Brilliant logic, why is the sum of 360's positive factors equal to 13*15*6 and not 13*15*5?

Answer 1

the positive factors of 360 are

1,2,3,4,5,6,8,9,10,12,15,18,20,24,30,36,40,45,60,120,180,360

Their sum is 1008 , which is NOT equal to neither 13*15*6 , nor 13*15*5