256731363

素因数分解:

$3^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23831}}^1$

素因数の和:23869

約数の個数: 40

約数和(自身を含む): 461387520

約数和(自身を除く): 204656157

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 133, 171, 189, 399, 513, 567, 1197, 1539, 3591, 10773, 23831, 71493, 166817, 214479, 452789, 500451, 643437, 1358367, 1501353, 1930311, 3169523, 4075101, 4504059, 9508569, 12225303, 13512177, 28525707, 36675909, 85577121, 256731363]

約数ペア:

[(1, 256731363), (3, 85577121), (7, 36675909), (9, 28525707), (19, 13512177), (21, 12225303), (27, 9508569), (57, 4504059), (63, 4075101), (81, 3169523), (133, 1930311), (171, 1501353), (189, 1358367), (399, 643437), (513, 500451), (567, 452789), (1197, 214479), (1539, 166817), (3591, 71493), (10773, 23831)]