  Herein, we present the statistical properties of active galactic nuclei
(AGNs) for approximately 1 million member galaxies of galaxy groups and
clusters, with 0.1 $<$ cluster redshift ($z_{\rm cl}$) $<$ 1.4, selected using
Subaru Hyper Suprime-Cam, the so-called CAMIRA clusters. In this research, we
focused on the AGN power fraction ($f_{\rm AGN}$), which is defined as the
proportion of the contribution of AGNs to the total infrared (IR) luminosity,
$L_{\rm IR}$ (AGN)/$L_{\rm IR}$, and examined how $f_{\rm AGN}$ depends on (i)
$z_{\rm cl}$ and (ii) the distance from the cluster center. We compiled
multiwavelength data using the ultraviolet--mid-IR range. Moreover, we
performed spectral energy distribution fits to determine $f_{\rm AGN}$ using
the CIGALE code with the SKIRTOR AGN model. We found that (i) the value of
$f_{\rm AGN}$ in the CAMIRA clusters is positively correlated with $z_{\rm
cl}$, with the correlation slope being steeper than that for field galaxies,
and (ii) $f_{\rm AGN}$ exhibits a high value at the cluster outskirts. These
results indicate that the emergence of AGN population depends on the redshift
and environment and that galaxy groups and clusters at high redshifts are
important in AGN evolution. Additionally, we demonstrated that cluster--cluster
mergers may enhance AGN activity at the outskirts of particularly massive
galaxy clusters. Our findings are consistent with a related study on the CAMIRA
clusters that was based on the AGN number fraction.
