20279207680

素因数分解:

$2^8\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{15733}}^1$

素因数の和:15826

約数の個数: 144

約数和(自身を含む): 52099679520

約数和(自身を除く): 31820471840

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 53, 64, 76, 80, 95, 106, 128, 152, 160, 190, 212, 256, 265, 304, 320, 380, 424, 530, 608, 640, 760, 848, 1007, 1060, 1216, 1280, 1520, 1696, 2014, 2120, 2432, 3040, 3392, 4028, 4240, 4864, 5035, 6080, 6784, 8056, 8480, 10070, 12160, 13568, 15733, 16112, 16960, 20140, 24320, 31466, 32224, 33920, 40280, 62932, 64448, 67840, 78665, 80560, 125864, 128896, 157330, 161120, 251728, 257792, 298927, 314660, 322240, 503456, 597854, 629320, 644480, 833849, 1006912, 1195708, 1258640, 1288960, 1494635, 1667698, 2013824, 2391416, 2517280, 2989270, 3335396, 4027648, 4169245, 4782832, 5034560, 5978540, 6670792, 8338490, 9565664, 10069120, 11957080, 13341584, 15843131, 16676980, 19131328, 20138240, 23914160, 26683168, 31686262, 33353960, 38262656, 47828320, 53366336, 63372524, 66707920, 76525312, 79215655, 95656640, 106732672, 126745048, 133415840, 158431310, 191313280, 213465344, 253490096, 266831680, 316862620, 382626560, 506980192, 533663360, 633725240, 1013960384, 1067326720, 1267450480, 2027920768, 2534900960, 4055841536, 5069801920, 10139603840, 20279207680]

約数ペア:

[(1, 20279207680), (2, 10139603840), (4, 5069801920), (5, 4055841536), (8, 2534900960), (10, 2027920768), (16, 1267450480), (19, 1067326720), (20, 1013960384), (32, 633725240), (38, 533663360), (40, 506980192), (53, 382626560), (64, 316862620), (76, 266831680), (80, 253490096), (95, 213465344), (106, 191313280), (128, 158431310), (152, 133415840), (160, 126745048), (190, 106732672), (212, 95656640), (256, 79215655), (265, 76525312), (304, 66707920), (320, 63372524), (380, 53366336), (424, 47828320), (530, 38262656), (608, 33353960), (640, 31686262), (760, 26683168), (848, 23914160), (1007, 20138240), (1060, 19131328), (1216, 16676980), (1280, 15843131), (1520, 13341584), (1696, 11957080), (2014, 10069120), (2120, 9565664), (2432, 8338490), (3040, 6670792), (3392, 5978540), (4028, 5034560), (4240, 4782832), (4864, 4169245), (5035, 4027648), (6080, 3335396), (6784, 2989270), (8056, 2517280), (8480, 2391416), (10070, 2013824), (12160, 1667698), (13568, 1494635), (15733, 1288960), (16112, 1258640), (16960, 1195708), (20140, 1006912), (24320, 833849), (31466, 644480), (32224, 629320), (33920, 597854), (40280, 503456), (62932, 322240), (64448, 314660), (67840, 298927), (78665, 257792), (80560, 251728), (125864, 161120), (128896, 157330)]