1991788707840

素因数分解:

$2^{14}\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{261439}}^1$

素因数の和:261506

約数の個数: 240

約数和(自身を含む): 6579152240640

約数和(自身を除く): 4587363532800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 32, 40, 48, 60, 62, 64, 80, 93, 96, 120, 124, 128, 155, 160, 186, 192, 240, 248, 256, 310, 320, 372, 384, 465, 480, 496, 512, 620, 640, 744, 768, 930, 960, 992, 1024, 1240, 1280, 1488, 1536, 1860, 1920, 1984, 2048, 2480, 2560, 2976, 3072, 3720, 3840, 3968, 4096, 4960, 5120, 5952, 6144, 7440, 7680, 7936, 8192, 9920, 10240, 11904, 12288, 14880, 15360, 15872, 16384, 19840, 20480, 23808, 24576, 29760, 30720, 31744, 39680, 40960, 47616, 49152, 59520, 61440, 63488, 79360, 81920, 95232, 119040, 122880, 126976, 158720, 190464, 238080, 245760, 253952, 261439, 317440, 380928, 476160, 507904, 522878, 634880, 761856, 784317, 952320, 1045756, 1269760, 1307195, 1523712, 1568634, 1904640, 2091512, 2539520, 2614390, 3137268, 3809280, 3921585, 4183024, 5228780, 6274536, 7618560, 7843170, 8104609, 8366048, 10457560, 12549072, 15686340, 16209218, 16732096, 20915120, 24313827, 25098144, 31372680, 32418436, 33464192, 40523045, 41830240, 48627654, 50196288, 62745360, 64836872, 66928384, 81046090, 83660480, 97255308, 100392576, 121569135, 125490720, 129673744, 133856768, 162092180, 167320960, 194510616, 200785152, 243138270, 250981440, 259347488, 267713536, 324184360, 334641920, 389021232, 401570304, 486276540, 501962880, 518694976, 535427072, 648368720, 669283840, 778042464, 803140608, 972553080, 1003925760, 1037389952, 1070854144, 1296737440, 1338567680, 1556084928, 1606281216, 1945106160, 2007851520, 2074779904, 2141708288, 2593474880, 2677135360, 3112169856, 3212562432, 3890212320, 4015703040, 4149559808, 4283416576, 5186949760, 5354270720, 6224339712, 6425124864, 7780424640, 8031406080, 8299119616, 10373899520, 10708541440, 12448679424, 12850249728, 15560849280, 16062812160, 16598239232, 20747799040, 21417082880, 24897358848, 31121698560, 32125624320, 33196478464, 41495598080, 49794717696, 62243397120, 64251248640, 66392956928, 82991196160, 99589435392, 124486794240, 132785913856, 165982392320, 199178870784, 248973588480, 331964784640, 398357741568, 497947176960, 663929569280, 995894353920, 1991788707840]

約数ペア:

[(1, 1991788707840), (2, 995894353920), (3, 663929569280), (4, 497947176960), (5, 398357741568), (6, 331964784640), (8, 248973588480), (10, 199178870784), (12, 165982392320), (15, 132785913856), (16, 124486794240), (20, 99589435392), (24, 82991196160), (30, 66392956928), (31, 64251248640), (32, 62243397120), (40, 49794717696), (48, 41495598080), (60, 33196478464), (62, 32125624320), (64, 31121698560), (80, 24897358848), (93, 21417082880), (96, 20747799040), (120, 16598239232), (124, 16062812160), (128, 15560849280), (155, 12850249728), (160, 12448679424), (186, 10708541440), (192, 10373899520), (240, 8299119616), (248, 8031406080), (256, 7780424640), (310, 6425124864), (320, 6224339712), (372, 5354270720), (384, 5186949760), (465, 4283416576), (480, 4149559808), (496, 4015703040), (512, 3890212320), (620, 3212562432), (640, 3112169856), (744, 2677135360), (768, 2593474880), (930, 2141708288), (960, 2074779904), (992, 2007851520), (1024, 1945106160), (1240, 1606281216), (1280, 1556084928), (1488, 1338567680), (1536, 1296737440), (1860, 1070854144), (1920, 1037389952), (1984, 1003925760), (2048, 972553080), (2480, 803140608), (2560, 778042464), (2976, 669283840), (3072, 648368720), (3720, 535427072), (3840, 518694976), (3968, 501962880), (4096, 486276540), (4960, 401570304), (5120, 389021232), (5952, 334641920), (6144, 324184360), (7440, 267713536), (7680, 259347488), (7936, 250981440), (8192, 243138270), (9920, 200785152), (10240, 194510616), (11904, 167320960), (12288, 162092180), (14880, 133856768), (15360, 129673744), (15872, 125490720), (16384, 121569135), (19840, 100392576), (20480, 97255308), (23808, 83660480), (24576, 81046090), (29760, 66928384), (30720, 64836872), (31744, 62745360), (39680, 50196288), (40960, 48627654), (47616, 41830240), (49152, 40523045), (59520, 33464192), (61440, 32418436), (63488, 31372680), (79360, 25098144), (81920, 24313827), (95232, 20915120), (119040, 16732096), (122880, 16209218), (126976, 15686340), (158720, 12549072), (190464, 10457560), (238080, 8366048), (245760, 8104609), (253952, 7843170), (261439, 7618560), (317440, 6274536), (380928, 5228780), (476160, 4183024), (507904, 3921585), (522878, 3809280), (634880, 3137268), (761856, 2614390), (784317, 2539520), (952320, 2091512), (1045756, 1904640), (1269760, 1568634), (1307195, 1523712)]