  Here, we analyzed magnetic elements of the solar active regions (ARs)
observed in the line-of-sight magnetograms (the 6173 \AA~Fe \small{I} line)
recorded with the Solar Dynamics Observatory (SDO)/Helioseismic and Magnetic
Imager (HMI). The Yet Another Feature Tracking Algorithm (\textsf{YAFTA}) was
employed to extract the statistical properties of these features (\textit{e.g.}
filling factor, magnetic flux, and lifetime) within the areas of
$180{\small^{\prime\prime}} \times 180{\small^{\prime\prime}}$ inside the
flaring AR (NOAA 12443) and the non-flaring AR (NOAA 12446) for 3 to 5 November
2015 and for 4 to 6 November 2015, respectively. The mean filling factor of
polarities was obtained to be about 0.49 for the flaring AR; this value was
0.08 for the non-flaring AR. Time series of the filling factors of the negative
and positive polarities for the flaring AR showed anti-correlation (with the
Pearson value of -0.80); while for the non-flaring AR, there was the strong
positive correlation (with the Pearson value of 0.95). A power-law function was
fitted to the frequency distributions of flux ($F$), size ($S$), and lifetime
($T$). Power exponents of the distributions of flux, size, and lifetime for the
flaring AR were obtained to be about -2.36, -3.11, and -1.70, respectively;
these values of exponents for the non-flaring AR were found to be about -2.53,
-3.42, and -1.61, respectively. ...
