256478128

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{7283}}^1$

素因数の和:7393

約数の個数: 40

約数和(自身を含む): 520252416

約数和(自身を除く): 263774288

約数列:

[1, 2, 4, 8, 16, 31, 62, 71, 124, 142, 248, 284, 496, 568, 1136, 2201, 4402, 7283, 8804, 14566, 17608, 29132, 35216, 58264, 116528, 225773, 451546, 517093, 903092, 1034186, 1806184, 2068372, 3612368, 4136744, 8273488, 16029883, 32059766, 64119532, 128239064, 256478128]

約数ペア:

[(1, 256478128), (2, 128239064), (4, 64119532), (8, 32059766), (16, 16029883), (31, 8273488), (62, 4136744), (71, 3612368), (124, 2068372), (142, 1806184), (248, 1034186), (284, 903092), (496, 517093), (568, 451546), (1136, 225773), (2201, 116528), (4402, 58264), (7283, 35216), (8804, 29132), (14566, 17608)]