The four factors present in a Time Series Data are:

1. Trend Factors
   These represent the long-term movement in a time series, indicating the overall direction over time (upward or downward).
2. Seasonal Factors
   These are short-term variations in a time series that repeat at regular intervals, typically within a year (e.g., monthly or quarterly fluctuations).
3. Cyclical Factors
   These represent long-term oscillations around the trend line due to economic cycles, often lasting more than a year.
4. Random Factors/Irregular Factors
   These represent random, unpredictable variations in a time series caused by unforeseen events (e.g., natural disasters or sudden market shocks).