20985821

素因数分解:

${\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{431}}^1$

素因数の和:556

約数の個数: 16

約数和(自身を含む): 23016960

約数和(自身を除く): 2031139

約数列:

[1, 23, 29, 73, 431, 667, 1679, 2117, 9913, 12499, 31463, 48691, 287477, 723649, 912427, 20985821]

約数ペア:

[(1, 20985821), (23, 912427), (29, 723649), (73, 287477), (431, 48691), (667, 31463), (1679, 12499), (2117, 9913)]