multiple path for load same module - lazy loading

If you really want to do this you can use UrlMatcher to find the correct component.

SIDE NOTE:I wouldn't recommend you to do this. instead go with my other answer. I think it's a better approach. BUT of-course it's your decision.

Simple demo

app.routing.module.ts (not changed)

{
    path: 'settings/account',
    loadChildren: './modules/settings/settings.module#SettingsModule',
},
{
    path: 'settings',
    loadChildren:'./modules/settings/settings.module#SettingsModule', 
}

settings.routing.module.ts

export function isAccount(url: UrlSegment[], group: UrlSegmentGroup) {
  return group.segments.length === 1 && group.segments[0].path.endsWith('account') ? ({consumed: url}) : null;
}

export function isSettings(url: UrlSegment[], group: UrlSegmentGroup) {
  return group.segments.length === 1 && group.segments[0].path.endsWith('settings') ? ({consumed: url}) : null;
}

export const routes: Routes = [
    {
        path: 'account',
        component: accountComponent,
        matcher: isAccount
    },
    {
        path: 'account/edit',
        component: accountEditComponent
    },
    {
        path: 'settings',
        component: settingsComponent,
        matcher: isSettings
    },
    {
        path: 'settings/edit',
        component: settingsEditComponent
    }
];

Result is exactly what you're looking for:

http://localhost:4200/settings will show settings component.

http://localhost:4200/account will show account component.

One way is to have settings as the default path (component) for this module, and all other components as a child route.

Simple DEMO

app.routing.module.ts

{
    path: 'settings/account',
    loadChildren: './modules/settings/settings.module#SettingsModule',
},
{
    path: 'settings',
    loadChildren:'./modules/settings/settings.module#SettingsModule', 
},

settings.routing.module.ts

export const routes: Routes = [
    {
        path: '',
        component: settingsComponent
    },
    {
        path: 'edit',
        component: settingsEditComponent
    },
    {
        path: 'account',
        component: accountComponent
    },
    {
        path: 'account/edit',
        component: accountEditComponent
    }
];

http://localhost:4200/setting will show settings component.

http://localhost:4200/settings/account will show account component.

..etc