81549819

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{9817}}^1$

素因数の和:9907

約数の個数: 24

約数和(自身を含む): 128655072

約数和(自身を除く): 47105253

約数列:

[1, 3, 9, 13, 39, 71, 117, 213, 639, 923, 2769, 8307, 9817, 29451, 88353, 127621, 382863, 697007, 1148589, 2091021, 6273063, 9061091, 27183273, 81549819]

約数ペア:

[(1, 81549819), (3, 27183273), (9, 9061091), (13, 6273063), (39, 2091021), (71, 1148589), (117, 697007), (213, 382863), (639, 127621), (923, 88353), (2769, 29451), (8307, 9817)]