257156746

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{811}}^1$

素因数の和:931

約数の個数: 64

約数和(自身を含む): 505128960

約数和(自身を除く): 247972214

約数列:

[1, 2, 7, 11, 14, 22, 29, 58, 71, 77, 142, 154, 203, 319, 406, 497, 638, 781, 811, 994, 1562, 1622, 2059, 2233, 4118, 4466, 5467, 5677, 8921, 10934, 11354, 14413, 17842, 22649, 23519, 28826, 45298, 47038, 57581, 62447, 115162, 124894, 158543, 164633, 258709, 317086, 329266, 403067, 517418, 633391, 806134, 1266782, 1669849, 1810963, 3339698, 3621926, 4433737, 8867474, 11688943, 18368339, 23377886, 36736678, 128578373, 257156746]

約数ペア:

[(1, 257156746), (2, 128578373), (7, 36736678), (11, 23377886), (14, 18368339), (22, 11688943), (29, 8867474), (58, 4433737), (71, 3621926), (77, 3339698), (142, 1810963), (154, 1669849), (203, 1266782), (319, 806134), (406, 633391), (497, 517418), (638, 403067), (781, 329266), (811, 317086), (994, 258709), (1562, 164633), (1622, 158543), (2059, 124894), (2233, 115162), (4118, 62447), (4466, 57581), (5467, 47038), (5677, 45298), (8921, 28826), (10934, 23519), (11354, 22649), (14413, 17842)]