81870939

素因数分解:

$3^3\times {\mathrm{79}}^1\times {\mathrm{131}}^1\times {\mathrm{293}}^1$

素因数の和:512

約数の個数: 32

約数和(自身を含む): 124185600

約数和(自身を除く): 42314661

約数列:

[1, 3, 9, 27, 79, 131, 237, 293, 393, 711, 879, 1179, 2133, 2637, 3537, 7911, 10349, 23147, 31047, 38383, 69441, 93141, 115149, 208323, 279423, 345447, 624969, 1036341, 3032257, 9096771, 27290313, 81870939]

約数ペア:

[(1, 81870939), (3, 27290313), (9, 9096771), (27, 3032257), (79, 1036341), (131, 624969), (237, 345447), (293, 279423), (393, 208323), (711, 115149), (879, 93141), (1179, 69441), (2133, 38383), (2637, 31047), (3537, 23147), (7911, 10349)]