20107790720

素因数分解:

$2^7\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:425

約数の個数: 256

約数和(自身を含む): 51301071360

約数和(自身を除く): 31193280640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 43, 64, 71, 80, 82, 86, 128, 142, 160, 164, 172, 205, 215, 251, 284, 320, 328, 344, 355, 410, 430, 502, 568, 640, 656, 688, 710, 820, 860, 1004, 1136, 1255, 1312, 1376, 1420, 1640, 1720, 1763, 2008, 2272, 2510, 2624, 2752, 2840, 2911, 3053, 3280, 3440, 3526, 4016, 4544, 5020, 5248, 5504, 5680, 5822, 6106, 6560, 6880, 7052, 8032, 8815, 9088, 10040, 10291, 10793, 11360, 11644, 12212, 13120, 13760, 14104, 14555, 15265, 16064, 17630, 17821, 20080, 20582, 21586, 22720, 23288, 24424, 26240, 27520, 28208, 29110, 30530, 32128, 35260, 35642, 40160, 41164, 43172, 45440, 46576, 48848, 51455, 53965, 56416, 58220, 61060, 70520, 71284, 80320, 82328, 86344, 89105, 93152, 97696, 102910, 107930, 112832, 116440, 122120, 125173, 141040, 142568, 160640, 164656, 172688, 178210, 186304, 195392, 205820, 215860, 225664, 232880, 244240, 250346, 282080, 285136, 329312, 345376, 356420, 372608, 390784, 411640, 431720, 442513, 465760, 488480, 500692, 564160, 570272, 625865, 658624, 690752, 712840, 730661, 766303, 823280, 863440, 885026, 931520, 976960, 1001384, 1128320, 1140544, 1251730, 1317248, 1381504, 1425680, 1461322, 1532606, 1646560, 1726880, 1770052, 1863040, 1953920, 2002768, 2212565, 2281088, 2503460, 2851360, 2922644, 3065212, 3293120, 3453760, 3540104, 3653305, 3831515, 4005536, 4425130, 5006920, 5702720, 5845288, 6130424, 6586240, 6907520, 7080208, 7306610, 7663030, 8011072, 8850260, 10013840, 11405440, 11690576, 12260848, 14160416, 14613220, 15326060, 16022144, 17700520, 20027680, 23381152, 24521696, 28320832, 29226440, 30652120, 31418423, 35401040, 40055360, 46762304, 49043392, 56641664, 58452880, 61304240, 62836846, 70802080, 80110720, 93524608, 98086784, 116905760, 122608480, 125673692, 141604160, 157092115, 233811520, 245216960, 251347384, 283208320, 314184230, 467623040, 490433920, 502694768, 628368460, 1005389536, 1256736920, 2010779072, 2513473840, 4021558144, 5026947680, 10053895360, 20107790720]

約数ペア:

[(1, 20107790720), (2, 10053895360), (4, 5026947680), (5, 4021558144), (8, 2513473840), (10, 2010779072), (16, 1256736920), (20, 1005389536), (32, 628368460), (40, 502694768), (41, 490433920), (43, 467623040), (64, 314184230), (71, 283208320), (80, 251347384), (82, 245216960), (86, 233811520), (128, 157092115), (142, 141604160), (160, 125673692), (164, 122608480), (172, 116905760), (205, 98086784), (215, 93524608), (251, 80110720), (284, 70802080), (320, 62836846), (328, 61304240), (344, 58452880), (355, 56641664), (410, 49043392), (430, 46762304), (502, 40055360), (568, 35401040), (640, 31418423), (656, 30652120), (688, 29226440), (710, 28320832), (820, 24521696), (860, 23381152), (1004, 20027680), (1136, 17700520), (1255, 16022144), (1312, 15326060), (1376, 14613220), (1420, 14160416), (1640, 12260848), (1720, 11690576), (1763, 11405440), (2008, 10013840), (2272, 8850260), (2510, 8011072), (2624, 7663030), (2752, 7306610), (2840, 7080208), (2911, 6907520), (3053, 6586240), (3280, 6130424), (3440, 5845288), (3526, 5702720), (4016, 5006920), (4544, 4425130), (5020, 4005536), (5248, 3831515), (5504, 3653305), (5680, 3540104), (5822, 3453760), (6106, 3293120), (6560, 3065212), (6880, 2922644), (7052, 2851360), (8032, 2503460), (8815, 2281088), (9088, 2212565), (10040, 2002768), (10291, 1953920), (10793, 1863040), (11360, 1770052), (11644, 1726880), (12212, 1646560), (13120, 1532606), (13760, 1461322), (14104, 1425680), (14555, 1381504), (15265, 1317248), (16064, 1251730), (17630, 1140544), (17821, 1128320), (20080, 1001384), (20582, 976960), (21586, 931520), (22720, 885026), (23288, 863440), (24424, 823280), (26240, 766303), (27520, 730661), (28208, 712840), (29110, 690752), (30530, 658624), (32128, 625865), (35260, 570272), (35642, 564160), (40160, 500692), (41164, 488480), (43172, 465760), (45440, 442513), (46576, 431720), (48848, 411640), (51455, 390784), (53965, 372608), (56416, 356420), (58220, 345376), (61060, 329312), (70520, 285136), (71284, 282080), (80320, 250346), (82328, 244240), (86344, 232880), (89105, 225664), (93152, 215860), (97696, 205820), (102910, 195392), (107930, 186304), (112832, 178210), (116440, 172688), (122120, 164656), (125173, 160640), (141040, 142568)]