Output specific numbers from a slider

I have a slider in the range from 1 to 64. I only want to output the numbers: 1,2,4,8,12,16,20,24,32,48,64. (in the attached maxpat-file the slider goes just to 16)

I don't know if its possible within max8?! I tried to write a js object (just until the number 16 to test it) but it doesn't work. I only get the output "1".

connected the output of the slider to a integer-box --> [pak I] --> [prepend divide] --> inlet of [js divide.js]

the divide.js-code:

autowatch = 1;
inlets = 1;
outlets = 1;

function divide(zahl) {
 
 if (zahl = 1) {
 outlet(0,1);
    }

 else if (zahl = 2) {
 outlet(0,2);
    }

 else if (zahl <= 4){
 outlet(0,4);
    }

 else if (zahl <= 8) {
 outlet(0,8);
    }

 else if (zahl <= 12){
 outlet(0,12);
    }
 else {
 outlet(0,16);
    }
}