21247834

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{4129}}^1$

素因数の和:4245

約数の個数: 16

約数和(自身を含む): 33304320

約数和(自身を除く): 12056486

約数列:

[1, 2, 31, 62, 83, 166, 2573, 4129, 5146, 8258, 127999, 255998, 342707, 685414, 10623917, 21247834]

約数ペア:

[(1, 21247834), (2, 10623917), (31, 685414), (62, 342707), (83, 255998), (166, 127999), (2573, 8258), (4129, 5146)]