257121601

素因数分解:

${\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{401}}^1\times {\mathrm{821}}^1$

素因数の和:1304

約数の個数: 16

約数和(自身を含む): 285503616

約数和(自身を除く): 28382015

約数列:

[1, 11, 71, 401, 781, 821, 4411, 9031, 28471, 58291, 313181, 329221, 641201, 3621431, 23374691, 257121601]

約数ペア:

[(1, 257121601), (11, 23374691), (71, 3621431), (401, 641201), (781, 329221), (821, 313181), (4411, 58291), (9031, 28471)]