20406790400

素因数分解:

$2^8\times 5^2\times {\mathrm{19}}^1\times {\mathrm{283}}^1\times {\mathrm{593}}^1$

素因数の和:921

約数の個数: 216

約数和(自身を含む): 53446266720

約数和(自身を除く): 33039476320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 50, 64, 76, 80, 95, 100, 128, 152, 160, 190, 200, 256, 283, 304, 320, 380, 400, 475, 566, 593, 608, 640, 760, 800, 950, 1132, 1186, 1216, 1280, 1415, 1520, 1600, 1900, 2264, 2372, 2432, 2830, 2965, 3040, 3200, 3800, 4528, 4744, 4864, 5377, 5660, 5930, 6080, 6400, 7075, 7600, 9056, 9488, 10754, 11267, 11320, 11860, 12160, 14150, 14825, 15200, 18112, 18976, 21508, 22534, 22640, 23720, 24320, 26885, 28300, 29650, 30400, 36224, 37952, 43016, 45068, 45280, 47440, 53770, 56335, 56600, 59300, 60800, 72448, 75904, 86032, 90136, 90560, 94880, 107540, 112670, 113200, 118600, 121600, 134425, 151808, 167819, 172064, 180272, 181120, 189760, 215080, 225340, 226400, 237200, 268850, 281675, 335638, 344128, 360544, 362240, 379520, 430160, 450680, 452800, 474400, 537700, 563350, 671276, 688256, 721088, 759040, 839095, 860320, 901360, 905600, 948800, 1075400, 1126700, 1342552, 1376512, 1442176, 1678190, 1720640, 1802720, 1811200, 1897600, 2150800, 2253400, 2685104, 2884352, 3188561, 3356380, 3441280, 3605440, 3795200, 4195475, 4301600, 4506800, 5370208, 6377122, 6712760, 6882560, 7210880, 8390950, 8603200, 9013600, 10740416, 12754244, 13425520, 14421760, 15942805, 16781900, 17206400, 18027200, 21480832, 25508488, 26851040, 31885610, 33563800, 34412800, 36054400, 42961664, 51016976, 53702080, 63771220, 67127600, 72108800, 79714025, 102033952, 107404160, 127542440, 134255200, 159428050, 204067904, 214808320, 255084880, 268510400, 318856100, 408135808, 510169760, 537020800, 637712200, 816271616, 1020339520, 1074041600, 1275424400, 2040679040, 2550848800, 4081358080, 5101697600, 10203395200, 20406790400]

約数ペア:

[(1, 20406790400), (2, 10203395200), (4, 5101697600), (5, 4081358080), (8, 2550848800), (10, 2040679040), (16, 1275424400), (19, 1074041600), (20, 1020339520), (25, 816271616), (32, 637712200), (38, 537020800), (40, 510169760), (50, 408135808), (64, 318856100), (76, 268510400), (80, 255084880), (95, 214808320), (100, 204067904), (128, 159428050), (152, 134255200), (160, 127542440), (190, 107404160), (200, 102033952), (256, 79714025), (283, 72108800), (304, 67127600), (320, 63771220), (380, 53702080), (400, 51016976), (475, 42961664), (566, 36054400), (593, 34412800), (608, 33563800), (640, 31885610), (760, 26851040), (800, 25508488), (950, 21480832), (1132, 18027200), (1186, 17206400), (1216, 16781900), (1280, 15942805), (1415, 14421760), (1520, 13425520), (1600, 12754244), (1900, 10740416), (2264, 9013600), (2372, 8603200), (2432, 8390950), (2830, 7210880), (2965, 6882560), (3040, 6712760), (3200, 6377122), (3800, 5370208), (4528, 4506800), (4744, 4301600), (4864, 4195475), (5377, 3795200), (5660, 3605440), (5930, 3441280), (6080, 3356380), (6400, 3188561), (7075, 2884352), (7600, 2685104), (9056, 2253400), (9488, 2150800), (10754, 1897600), (11267, 1811200), (11320, 1802720), (11860, 1720640), (12160, 1678190), (14150, 1442176), (14825, 1376512), (15200, 1342552), (18112, 1126700), (18976, 1075400), (21508, 948800), (22534, 905600), (22640, 901360), (23720, 860320), (24320, 839095), (26885, 759040), (28300, 721088), (29650, 688256), (30400, 671276), (36224, 563350), (37952, 537700), (43016, 474400), (45068, 452800), (45280, 450680), (47440, 430160), (53770, 379520), (56335, 362240), (56600, 360544), (59300, 344128), (60800, 335638), (72448, 281675), (75904, 268850), (86032, 237200), (90136, 226400), (90560, 225340), (94880, 215080), (107540, 189760), (112670, 181120), (113200, 180272), (118600, 172064), (121600, 167819), (134425, 151808)]