Fix Index mul/div ops with Series, closes #19080, #19042
- [x] closes #19080, closes #19042
- [ ] tests added / passed
- [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry

lgtm. pls add a whatsnew note, bug fix / conversion. in generall *anything* that is user facing needs a whatsnew note. ping on green. # [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/19253?src=pr&el=h1) Report
> Merging [#19253](https://codecov.io/gh/pandas-dev/pandas/pull/19253?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/4ebdc50f250ab2fd4312f82d119e5370a5128810?src=pr&el=desc) will **increase** coverage by `<.01%`.
> The diff coverage is `100%`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/19253/graphs/tree.svg?width=650&src=pr&token=eZ4WkYLtcO&height=150)](https://codecov.io/gh/pandas-dev/pandas/pull/19253?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master   #19253      +/-   ##
==========================================
+ Coverage   91.56%   91.56%   +<.01%     
==========================================
  Files         148      148              
  Lines       48856    48861       +5     
==========================================
+ Hits        44733    44738       +5     
  Misses       4123     4123
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `89.93% <100%> (ø)` | :arrow_up: |
| #single | `41.69% <40%> (-0.01%)` | :arrow_down: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/19253?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/core/indexes/range.py](https://codecov.io/gh/pandas-dev/pandas/pull/19253/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvaW5kZXhlcy9yYW5nZS5weQ==) | `95.7% <100%> (+0.03%)` | :arrow_up: |
| [pandas/core/indexes/base.py](https://codecov.io/gh/pandas-dev/pandas/pull/19253/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvaW5kZXhlcy9iYXNlLnB5) | `96.46% <100%> (ø)` | :arrow_up: |

------

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> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/19253?src=pr&el=footer). Last update [4ebdc50...c3e0267](https://codecov.io/gh/pandas-dev/pandas/pull/19253?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 thanks!