21541310720

素因数分解:

$2^8\times 5^1\times {\mathrm{47}}^1\times {\mathrm{211}}^1\times {\mathrm{1697}}^1$

素因数の和:1976

約数の個数: 144

約数和(自身を含む): 52976947968

約数和(自身を除く): 31435637248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 94, 128, 160, 188, 211, 235, 256, 320, 376, 422, 470, 640, 752, 844, 940, 1055, 1280, 1504, 1688, 1697, 1880, 2110, 3008, 3376, 3394, 3760, 4220, 6016, 6752, 6788, 7520, 8440, 8485, 9917, 12032, 13504, 13576, 15040, 16880, 16970, 19834, 27008, 27152, 30080, 33760, 33940, 39668, 49585, 54016, 54304, 60160, 67520, 67880, 79336, 79759, 99170, 108608, 135040, 135760, 158672, 159518, 198340, 217216, 270080, 271520, 317344, 319036, 358067, 396680, 398795, 434432, 543040, 634688, 638072, 716134, 793360, 797590, 1086080, 1269376, 1276144, 1432268, 1586720, 1595180, 1790335, 2172160, 2538752, 2552288, 2864536, 3173440, 3190360, 3580670, 5104576, 5729072, 6346880, 6380720, 7161340, 10209152, 11458144, 12693760, 12761440, 14322680, 16829149, 20418304, 22916288, 25522880, 28645360, 33658298, 45832576, 51045760, 57290720, 67316596, 84145745, 91665152, 102091520, 114581440, 134633192, 168291490, 229162880, 269266384, 336582980, 458325760, 538532768, 673165960, 1077065536, 1346331920, 2154131072, 2692663840, 4308262144, 5385327680, 10770655360, 21541310720]

約数ペア:

[(1, 21541310720), (2, 10770655360), (4, 5385327680), (5, 4308262144), (8, 2692663840), (10, 2154131072), (16, 1346331920), (20, 1077065536), (32, 673165960), (40, 538532768), (47, 458325760), (64, 336582980), (80, 269266384), (94, 229162880), (128, 168291490), (160, 134633192), (188, 114581440), (211, 102091520), (235, 91665152), (256, 84145745), (320, 67316596), (376, 57290720), (422, 51045760), (470, 45832576), (640, 33658298), (752, 28645360), (844, 25522880), (940, 22916288), (1055, 20418304), (1280, 16829149), (1504, 14322680), (1688, 12761440), (1697, 12693760), (1880, 11458144), (2110, 10209152), (3008, 7161340), (3376, 6380720), (3394, 6346880), (3760, 5729072), (4220, 5104576), (6016, 3580670), (6752, 3190360), (6788, 3173440), (7520, 2864536), (8440, 2552288), (8485, 2538752), (9917, 2172160), (12032, 1790335), (13504, 1595180), (13576, 1586720), (15040, 1432268), (16880, 1276144), (16970, 1269376), (19834, 1086080), (27008, 797590), (27152, 793360), (30080, 716134), (33760, 638072), (33940, 634688), (39668, 543040), (49585, 434432), (54016, 398795), (54304, 396680), (60160, 358067), (67520, 319036), (67880, 317344), (79336, 271520), (79759, 270080), (99170, 217216), (108608, 198340), (135040, 159518), (135760, 158672)]