257317319

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{18919}}^1$

素因数の和:19022

約数の個数: 16

約数和(自身を含む): 308774400

約数和(自身を除く): 51457081

約数列:

[1, 7, 29, 67, 203, 469, 1943, 13601, 18919, 132433, 548651, 1267573, 3840557, 8873011, 36759617, 257317319]

約数ペア:

[(1, 257317319), (7, 36759617), (29, 8873011), (67, 3840557), (203, 1267573), (469, 548651), (1943, 132433), (13601, 18919)]