21000490304757

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1\times {\mathrm{1429}}^1\times {\mathrm{18461}}^1$

素因数の和:20138

約数の個数: 64

約数和(自身を含む): 29805289113600

約数和(自身を除く): 8804798808843

約数列:

[1, 3, 23, 69, 83, 139, 249, 417, 1429, 1909, 3197, 4287, 5727, 9591, 11537, 18461, 32867, 34611, 55383, 98601, 118607, 198631, 265351, 355821, 424603, 595893, 796053, 1273809, 1532263, 2566079, 2727961, 4568513, 4596789, 7698237, 8183883, 13705539, 16486373, 26380769, 35242049, 49459119, 59019817, 79142307, 105726147, 177059451, 212984557, 379186579, 606757687, 638953671, 1137559737, 1820273061, 2189603827, 3666926891, 4898644811, 6568811481, 11000780673, 14695934433, 50360888021, 84339318493, 151082664063, 253017955479, 304354931953, 913064795859, 7000163434919, 21000490304757]

約数ペア:

[(1, 21000490304757), (3, 7000163434919), (23, 913064795859), (69, 304354931953), (83, 253017955479), (139, 151082664063), (249, 84339318493), (417, 50360888021), (1429, 14695934433), (1909, 11000780673), (3197, 6568811481), (4287, 4898644811), (5727, 3666926891), (9591, 2189603827), (11537, 1820273061), (18461, 1137559737), (32867, 638953671), (34611, 606757687), (55383, 379186579), (98601, 212984557), (118607, 177059451), (198631, 105726147), (265351, 79142307), (355821, 59019817), (424603, 49459119), (595893, 35242049), (796053, 26380769), (1273809, 16486373), (1532263, 13705539), (2566079, 8183883), (2727961, 7698237), (4568513, 4596789)]