21280234560

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{853}}^1\times {\mathrm{1999}}^1$

素因数の和:2885

約数の個数: 224

約数和(自身を含む): 72883776000

約数和(自身を除く): 51603541440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 130, 156, 160, 192, 195, 208, 240, 260, 312, 320, 390, 416, 480, 520, 624, 780, 832, 853, 960, 1040, 1248, 1560, 1706, 1999, 2080, 2496, 2559, 3120, 3412, 3998, 4160, 4265, 5118, 5997, 6240, 6824, 7996, 8530, 9995, 10236, 11089, 11994, 12480, 12795, 13648, 15992, 17060, 19990, 20472, 22178, 23988, 25590, 25987, 27296, 29985, 31984, 33267, 34120, 39980, 40944, 44356, 47976, 51180, 51974, 54592, 55445, 59970, 63968, 66534, 68240, 77961, 79960, 81888, 88712, 95952, 102360, 103948, 110890, 119940, 127936, 129935, 133068, 136480, 155922, 159920, 163776, 166335, 177424, 191904, 204720, 207896, 221780, 239880, 259870, 266136, 272960, 311844, 319840, 332670, 354848, 383808, 389805, 409440, 415792, 443560, 479760, 519740, 532272, 623688, 639680, 665340, 709696, 779610, 818880, 831584, 887120, 959520, 1039480, 1064544, 1247376, 1330680, 1559220, 1663168, 1705147, 1774240, 1919040, 2078960, 2129088, 2494752, 2661360, 3118440, 3410294, 3548480, 4157920, 4989504, 5115441, 5322720, 6236880, 6820588, 8315840, 8525735, 10230882, 10645440, 12473760, 13641176, 17051470, 20461764, 22166911, 24947520, 25577205, 27282352, 34102940, 40923528, 44333822, 51154410, 54564704, 66500733, 68205880, 81847056, 88667644, 102308820, 109129408, 110834555, 133001466, 136411760, 163694112, 177335288, 204617640, 221669110, 266002932, 272823520, 327388224, 332503665, 354670576, 409235280, 443338220, 532005864, 545647040, 665007330, 709341152, 818470560, 886676440, 1064011728, 1330014660, 1418682304, 1636941120, 1773352880, 2128023456, 2660029320, 3546705760, 4256046912, 5320058640, 7093411520, 10640117280, 21280234560]

約数ペア:

[(1, 21280234560), (2, 10640117280), (3, 7093411520), (4, 5320058640), (5, 4256046912), (6, 3546705760), (8, 2660029320), (10, 2128023456), (12, 1773352880), (13, 1636941120), (15, 1418682304), (16, 1330014660), (20, 1064011728), (24, 886676440), (26, 818470560), (30, 709341152), (32, 665007330), (39, 545647040), (40, 532005864), (48, 443338220), (52, 409235280), (60, 354670576), (64, 332503665), (65, 327388224), (78, 272823520), (80, 266002932), (96, 221669110), (104, 204617640), (120, 177335288), (130, 163694112), (156, 136411760), (160, 133001466), (192, 110834555), (195, 109129408), (208, 102308820), (240, 88667644), (260, 81847056), (312, 68205880), (320, 66500733), (390, 54564704), (416, 51154410), (480, 44333822), (520, 40923528), (624, 34102940), (780, 27282352), (832, 25577205), (853, 24947520), (960, 22166911), (1040, 20461764), (1248, 17051470), (1560, 13641176), (1706, 12473760), (1999, 10645440), (2080, 10230882), (2496, 8525735), (2559, 8315840), (3120, 6820588), (3412, 6236880), (3998, 5322720), (4160, 5115441), (4265, 4989504), (5118, 4157920), (5997, 3548480), (6240, 3410294), (6824, 3118440), (7996, 2661360), (8530, 2494752), (9995, 2129088), (10236, 2078960), (11089, 1919040), (11994, 1774240), (12480, 1705147), (12795, 1663168), (13648, 1559220), (15992, 1330680), (17060, 1247376), (19990, 1064544), (20472, 1039480), (22178, 959520), (23988, 887120), (25590, 831584), (25987, 818880), (27296, 779610), (29985, 709696), (31984, 665340), (33267, 639680), (34120, 623688), (39980, 532272), (40944, 519740), (44356, 479760), (47976, 443560), (51180, 415792), (51974, 409440), (54592, 389805), (55445, 383808), (59970, 354848), (63968, 332670), (66534, 319840), (68240, 311844), (77961, 272960), (79960, 266136), (81888, 259870), (88712, 239880), (95952, 221780), (102360, 207896), (103948, 204720), (110890, 191904), (119940, 177424), (127936, 166335), (129935, 163776), (133068, 159920), (136480, 155922)]