257267151

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{3121}}^1$

素因数の和:3244

約数の個数: 32

約数和(自身を含む): 395619840

約数和(自身を除く): 138352689

約数列:

[1, 3, 9, 27, 43, 71, 129, 213, 387, 639, 1161, 1917, 3053, 3121, 9159, 9363, 27477, 28089, 82431, 84267, 134203, 221591, 402609, 664773, 1207827, 1994319, 3623481, 5982957, 9528413, 28585239, 85755717, 257267151]

約数ペア:

[(1, 257267151), (3, 85755717), (9, 28585239), (27, 9528413), (43, 5982957), (71, 3623481), (129, 1994319), (213, 1207827), (387, 664773), (639, 402609), (1161, 221591), (1917, 134203), (3053, 84267), (3121, 82431), (9159, 28089), (9363, 27477)]