256985355

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{81973}}^1$

素因数の和:82011

約数の個数: 32

約数和(自身を含む): 472170240

約数和(自身を除く): 215184885

約数列:

[1, 3, 5, 11, 15, 19, 33, 55, 57, 95, 165, 209, 285, 627, 1045, 3135, 81973, 245919, 409865, 901703, 1229595, 1557487, 2705109, 4508515, 4672461, 7787435, 13525545, 17132357, 23362305, 51397071, 85661785, 256985355]

約数ペア:

[(1, 256985355), (3, 85661785), (5, 51397071), (11, 23362305), (15, 17132357), (19, 13525545), (33, 7787435), (55, 4672461), (57, 4508515), (95, 2705109), (165, 1557487), (209, 1229595), (285, 901703), (627, 409865), (1045, 245919), (3135, 81973)]