28667821

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{13697}}^1$

素因数の和:13740

約数の個数: 16

約数和(自身を含む): 36820224

約数和(自身を除く): 8152403

約数列:

[1, 7, 13, 23, 91, 161, 299, 2093, 13697, 95879, 178061, 315031, 1246427, 2205217, 4095403, 28667821]

約数ペア:

[(1, 28667821), (7, 4095403), (13, 2205217), (23, 1246427), (91, 315031), (161, 178061), (299, 95879), (2093, 13697)]