21372689

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{997}}^1$

素因数の和:1124

約数の個数: 16

約数和(自身を含む): 24646608

約数和(自身を除く): 3273919

約数列:

[1, 13, 17, 97, 221, 997, 1261, 1649, 12961, 16949, 21437, 96709, 220337, 1257217, 1644053, 21372689]

約数ペア:

[(1, 21372689), (13, 1644053), (17, 1257217), (97, 220337), (221, 96709), (997, 21437), (1261, 16949), (1649, 12961)]