Using service / provider with $ http and $ q parameters in angular configuration

I want to load some configuration for each controller in the app.config section. Each controller needs a different, but not mutually exclusive, dataset to load. I can’t figure out how to achieve this.

.config(['$routeProvider', '$locationProvider', 
        function($routeProvider, $locationProvider){


    $routeProvider
    .when('/', {
        templateUrl: "partials/pages/dashboard.html",
        controller: "dashboard_controller",
        resolve: { dash_config: 'SomeConfigD'},
    })
    .when('/a', {
        templateUrl: "partials/pages/a.html",
        controller: "a_controller",
        resolve: { dash_config: 'SomeConfigA'},
    })
}])

However, I do not want to write separate factories for someConfigAand someConfigD, since they share code. I want something like

app.factory('configFactory', function(...){
    var factory = ;

    function get1(){
        // some $http calls here and return a promise
    }

    function get2(){
        // some $http calls here and return a promise
    }

    function get3(){
        // some $http calls here and return a promise
    }
    factory.configA = function(){
        // return a promise to resolve both get1 and get2
    };
    factory.configD = function(){
        // return a promise to resolve both get2 and get3
    };
})

How can i do this?