21520004

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{383}}^1\times {\mathrm{1277}}^1$

素因数の和:1675

約数の個数: 24

約数和(自身を含む): 41223168

約数和(自身を除く): 19703164

約数列:

[1, 2, 4, 11, 22, 44, 383, 766, 1277, 1532, 2554, 4213, 5108, 8426, 14047, 16852, 28094, 56188, 489091, 978182, 1956364, 5380001, 10760002, 21520004]

約数ペア:

[(1, 21520004), (2, 10760002), (4, 5380001), (11, 1956364), (22, 978182), (44, 489091), (383, 56188), (766, 28094), (1277, 16852), (1532, 14047), (2554, 8426), (4213, 5108)]