19988154488

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{227}}^1\times {\mathrm{164279}}^1$

素因数の和:164579

約数の個数: 32

約数和(自身を含む): 38204956800

約数和(自身を除く): 18216802312

約数列:

[1, 2, 4, 8, 67, 134, 227, 268, 454, 536, 908, 1816, 15209, 30418, 60836, 121672, 164279, 328558, 657116, 1314232, 11006693, 22013386, 37291333, 44026772, 74582666, 88053544, 149165332, 298330664, 2498519311, 4997038622, 9994077244, 19988154488]

約数ペア:

[(1, 19988154488), (2, 9994077244), (4, 4997038622), (8, 2498519311), (67, 298330664), (134, 149165332), (227, 88053544), (268, 74582666), (454, 44026772), (536, 37291333), (908, 22013386), (1816, 11006693), (15209, 1314232), (30418, 657116), (60836, 328558), (121672, 164279)]