81853983

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:457

約数の個数: 40

約数和(自身を含む): 127264896

約数和(自身を除く): 45410913

約数列:

[1, 3, 9, 27, 43, 71, 81, 129, 213, 331, 387, 639, 993, 1161, 1917, 2979, 3053, 3483, 5751, 8937, 9159, 14233, 23501, 26811, 27477, 42699, 70503, 82431, 128097, 211509, 247293, 384291, 634527, 1010543, 1152873, 1903581, 3031629, 9094887, 27284661, 81853983]

約数ペア:

[(1, 81853983), (3, 27284661), (9, 9094887), (27, 3031629), (43, 1903581), (71, 1152873), (81, 1010543), (129, 634527), (213, 384291), (331, 247293), (387, 211509), (639, 128097), (993, 82431), (1161, 70503), (1917, 42699), (2979, 27477), (3053, 26811), (3483, 23501), (5751, 14233), (8937, 9159)]