21256487280

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{145433}}^1$

素因数の和:145488

約数の個数: 240

約数和(自身を含む): 84398258880

約数和(自身を除く): 63141771600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 29, 30, 35, 36, 40, 42, 45, 48, 56, 58, 60, 63, 70, 72, 80, 84, 87, 90, 105, 112, 116, 120, 126, 140, 144, 145, 168, 174, 180, 203, 210, 232, 240, 252, 261, 280, 290, 315, 336, 348, 360, 406, 420, 435, 464, 504, 522, 560, 580, 609, 630, 696, 720, 812, 840, 870, 1008, 1015, 1044, 1160, 1218, 1260, 1305, 1392, 1624, 1680, 1740, 1827, 2030, 2088, 2320, 2436, 2520, 2610, 3045, 3248, 3480, 3654, 4060, 4176, 4872, 5040, 5220, 6090, 6960, 7308, 8120, 9135, 9744, 10440, 12180, 14616, 16240, 18270, 20880, 24360, 29232, 36540, 48720, 73080, 145433, 146160, 290866, 436299, 581732, 727165, 872598, 1018031, 1163464, 1308897, 1454330, 1745196, 2036062, 2181495, 2326928, 2617794, 2908660, 3054093, 3490392, 4072124, 4217557, 4362990, 5090155, 5235588, 5817320, 6108186, 6544485, 6980784, 8144248, 8435114, 8725980, 9162279, 10180310, 10471176, 11634640, 12216372, 12652671, 13088970, 15270465, 16288496, 16870228, 17451960, 18324558, 20360620, 20942352, 21087785, 24432744, 25305342, 26177940, 29522899, 30540930, 33740456, 34903920, 36649116, 37958013, 40721240, 42175570, 45811395, 48865488, 50610684, 52355880, 59045798, 61081860, 63263355, 67480912, 73298232, 75916026, 81442480, 84351140, 88568697, 91622790, 101221368, 104711760, 118091596, 122163720, 126526710, 146596464, 147614495, 151832052, 168702280, 177137394, 183245580, 189790065, 202442736, 236183192, 244327440, 253053420, 265706091, 295228990, 303664104, 337404560, 354274788, 366491160, 379580130, 442843485, 472366384, 506106840, 531412182, 590457980, 607328208, 708549576, 732982320, 759160260, 885686970, 1012213680, 1062824364, 1180915960, 1328530455, 1417099152, 1518320520, 1771373940, 2125648728, 2361831920, 2657060910, 3036641040, 3542747880, 4251297456, 5314121820, 7085495760, 10628243640, 21256487280]

約数ペア:

[(1, 21256487280), (2, 10628243640), (3, 7085495760), (4, 5314121820), (5, 4251297456), (6, 3542747880), (7, 3036641040), (8, 2657060910), (9, 2361831920), (10, 2125648728), (12, 1771373940), (14, 1518320520), (15, 1417099152), (16, 1328530455), (18, 1180915960), (20, 1062824364), (21, 1012213680), (24, 885686970), (28, 759160260), (29, 732982320), (30, 708549576), (35, 607328208), (36, 590457980), (40, 531412182), (42, 506106840), (45, 472366384), (48, 442843485), (56, 379580130), (58, 366491160), (60, 354274788), (63, 337404560), (70, 303664104), (72, 295228990), (80, 265706091), (84, 253053420), (87, 244327440), (90, 236183192), (105, 202442736), (112, 189790065), (116, 183245580), (120, 177137394), (126, 168702280), (140, 151832052), (144, 147614495), (145, 146596464), (168, 126526710), (174, 122163720), (180, 118091596), (203, 104711760), (210, 101221368), (232, 91622790), (240, 88568697), (252, 84351140), (261, 81442480), (280, 75916026), (290, 73298232), (315, 67480912), (336, 63263355), (348, 61081860), (360, 59045798), (406, 52355880), (420, 50610684), (435, 48865488), (464, 45811395), (504, 42175570), (522, 40721240), (560, 37958013), (580, 36649116), (609, 34903920), (630, 33740456), (696, 30540930), (720, 29522899), (812, 26177940), (840, 25305342), (870, 24432744), (1008, 21087785), (1015, 20942352), (1044, 20360620), (1160, 18324558), (1218, 17451960), (1260, 16870228), (1305, 16288496), (1392, 15270465), (1624, 13088970), (1680, 12652671), (1740, 12216372), (1827, 11634640), (2030, 10471176), (2088, 10180310), (2320, 9162279), (2436, 8725980), (2520, 8435114), (2610, 8144248), (3045, 6980784), (3248, 6544485), (3480, 6108186), (3654, 5817320), (4060, 5235588), (4176, 5090155), (4872, 4362990), (5040, 4217557), (5220, 4072124), (6090, 3490392), (6960, 3054093), (7308, 2908660), (8120, 2617794), (9135, 2326928), (9744, 2181495), (10440, 2036062), (12180, 1745196), (14616, 1454330), (16240, 1308897), (18270, 1163464), (20880, 1018031), (24360, 872598), (29232, 727165), (36540, 581732), (48720, 436299), (73080, 290866), (145433, 146160)]