21127680

素因数分解:

$2^9\times 3^2\times 5^1\times 7^1\times {\mathrm{131}}^1$

素因数の和:167

約数の個数: 240

約数和(自身を含む): 84262464

約数和(自身を除く): 63134784

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 128, 131, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 256, 262, 280, 288, 315, 320, 336, 360, 384, 393, 420, 448, 480, 504, 512, 524, 560, 576, 630, 640, 655, 672, 720, 768, 786, 840, 896, 917, 960, 1008, 1048, 1120, 1152, 1179, 1260, 1280, 1310, 1344, 1440, 1536, 1572, 1680, 1792, 1834, 1920, 1965, 2016, 2096, 2240, 2304, 2358, 2520, 2560, 2620, 2688, 2751, 2880, 3144, 3360, 3584, 3668, 3840, 3930, 4032, 4192, 4480, 4585, 4608, 4716, 5040, 5240, 5376, 5502, 5760, 5895, 6288, 6720, 7336, 7680, 7860, 8064, 8253, 8384, 8960, 9170, 9432, 10080, 10480, 10752, 11004, 11520, 11790, 12576, 13440, 13755, 14672, 15720, 16128, 16506, 16768, 17920, 18340, 18864, 20160, 20960, 22008, 23040, 23580, 25152, 26880, 27510, 29344, 31440, 32256, 33012, 33536, 36680, 37728, 40320, 41265, 41920, 44016, 47160, 50304, 53760, 55020, 58688, 62880, 66024, 67072, 73360, 75456, 80640, 82530, 83840, 88032, 94320, 100608, 110040, 117376, 125760, 132048, 146720, 150912, 161280, 165060, 167680, 176064, 188640, 201216, 220080, 234752, 251520, 264096, 293440, 301824, 330120, 335360, 352128, 377280, 440160, 469504, 503040, 528192, 586880, 603648, 660240, 704256, 754560, 880320, 1006080, 1056384, 1173760, 1320480, 1408512, 1509120, 1760640, 2112768, 2347520, 2640960, 3018240, 3521280, 4225536, 5281920, 7042560, 10563840, 21127680]

約数ペア:

[(1, 21127680), (2, 10563840), (3, 7042560), (4, 5281920), (5, 4225536), (6, 3521280), (7, 3018240), (8, 2640960), (9, 2347520), (10, 2112768), (12, 1760640), (14, 1509120), (15, 1408512), (16, 1320480), (18, 1173760), (20, 1056384), (21, 1006080), (24, 880320), (28, 754560), (30, 704256), (32, 660240), (35, 603648), (36, 586880), (40, 528192), (42, 503040), (45, 469504), (48, 440160), (56, 377280), (60, 352128), (63, 335360), (64, 330120), (70, 301824), (72, 293440), (80, 264096), (84, 251520), (90, 234752), (96, 220080), (105, 201216), (112, 188640), (120, 176064), (126, 167680), (128, 165060), (131, 161280), (140, 150912), (144, 146720), (160, 132048), (168, 125760), (180, 117376), (192, 110040), (210, 100608), (224, 94320), (240, 88032), (252, 83840), (256, 82530), (262, 80640), (280, 75456), (288, 73360), (315, 67072), (320, 66024), (336, 62880), (360, 58688), (384, 55020), (393, 53760), (420, 50304), (448, 47160), (480, 44016), (504, 41920), (512, 41265), (524, 40320), (560, 37728), (576, 36680), (630, 33536), (640, 33012), (655, 32256), (672, 31440), (720, 29344), (768, 27510), (786, 26880), (840, 25152), (896, 23580), (917, 23040), (960, 22008), (1008, 20960), (1048, 20160), (1120, 18864), (1152, 18340), (1179, 17920), (1260, 16768), (1280, 16506), (1310, 16128), (1344, 15720), (1440, 14672), (1536, 13755), (1572, 13440), (1680, 12576), (1792, 11790), (1834, 11520), (1920, 11004), (1965, 10752), (2016, 10480), (2096, 10080), (2240, 9432), (2304, 9170), (2358, 8960), (2520, 8384), (2560, 8253), (2620, 8064), (2688, 7860), (2751, 7680), (2880, 7336), (3144, 6720), (3360, 6288), (3584, 5895), (3668, 5760), (3840, 5502), (3930, 5376), (4032, 5240), (4192, 5040), (4480, 4716), (4585, 4608)]