20871457920

素因数分解:

$2^7\times 3^4\times 5^1\times {\mathrm{402613}}^1$

素因数の和:402644

約数の個数: 160

約数和(自身を含む): 74535929820

約数和(自身を除く): 53664471900

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 81, 90, 96, 108, 120, 128, 135, 144, 160, 162, 180, 192, 216, 240, 270, 288, 320, 324, 360, 384, 405, 432, 480, 540, 576, 640, 648, 720, 810, 864, 960, 1080, 1152, 1296, 1440, 1620, 1728, 1920, 2160, 2592, 2880, 3240, 3456, 4320, 5184, 5760, 6480, 8640, 10368, 12960, 17280, 25920, 51840, 402613, 805226, 1207839, 1610452, 2013065, 2415678, 3220904, 3623517, 4026130, 4831356, 6039195, 6441808, 7247034, 8052260, 9662712, 10870551, 12078390, 12883616, 14494068, 16104520, 18117585, 19325424, 21741102, 24156780, 25767232, 28988136, 32209040, 32611653, 36235170, 38650848, 43482204, 48313560, 51534464, 54352755, 57976272, 64418080, 65223306, 72470340, 77301696, 86964408, 96627120, 108705510, 115952544, 128836160, 130446612, 144940680, 154603392, 163058265, 173928816, 193254240, 217411020, 231905088, 257672320, 260893224, 289881360, 326116530, 347857632, 386508480, 434822040, 463810176, 521786448, 579762720, 652233060, 695715264, 773016960, 869644080, 1043572896, 1159525440, 1304466120, 1391430528, 1739288160, 2087145792, 2319050880, 2608932240, 3478576320, 4174291584, 5217864480, 6957152640, 10435728960, 20871457920]

約数ペア:

[(1, 20871457920), (2, 10435728960), (3, 6957152640), (4, 5217864480), (5, 4174291584), (6, 3478576320), (8, 2608932240), (9, 2319050880), (10, 2087145792), (12, 1739288160), (15, 1391430528), (16, 1304466120), (18, 1159525440), (20, 1043572896), (24, 869644080), (27, 773016960), (30, 695715264), (32, 652233060), (36, 579762720), (40, 521786448), (45, 463810176), (48, 434822040), (54, 386508480), (60, 347857632), (64, 326116530), (72, 289881360), (80, 260893224), (81, 257672320), (90, 231905088), (96, 217411020), (108, 193254240), (120, 173928816), (128, 163058265), (135, 154603392), (144, 144940680), (160, 130446612), (162, 128836160), (180, 115952544), (192, 108705510), (216, 96627120), (240, 86964408), (270, 77301696), (288, 72470340), (320, 65223306), (324, 64418080), (360, 57976272), (384, 54352755), (405, 51534464), (432, 48313560), (480, 43482204), (540, 38650848), (576, 36235170), (640, 32611653), (648, 32209040), (720, 28988136), (810, 25767232), (864, 24156780), (960, 21741102), (1080, 19325424), (1152, 18117585), (1296, 16104520), (1440, 14494068), (1620, 12883616), (1728, 12078390), (1920, 10870551), (2160, 9662712), (2592, 8052260), (2880, 7247034), (3240, 6441808), (3456, 6039195), (4320, 4831356), (5184, 4026130), (5760, 3623517), (6480, 3220904), (8640, 2415678), (10368, 2013065), (12960, 1610452), (17280, 1207839), (25920, 805226), (51840, 402613)]