20657280

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1$

素因数の和:111

約数の個数: 256

約数和(自身を含む): 79315200

約数和(自身を除く): 58657920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 29, 30, 32, 35, 40, 42, 48, 53, 56, 58, 60, 64, 70, 80, 84, 87, 96, 105, 106, 112, 116, 120, 128, 140, 145, 159, 160, 168, 174, 192, 203, 210, 212, 224, 232, 240, 265, 280, 290, 318, 320, 336, 348, 371, 384, 406, 420, 424, 435, 448, 464, 480, 530, 560, 580, 609, 636, 640, 672, 696, 742, 795, 812, 840, 848, 870, 896, 928, 960, 1015, 1060, 1113, 1120, 1160, 1218, 1272, 1344, 1392, 1484, 1537, 1590, 1624, 1680, 1696, 1740, 1855, 1856, 1920, 2030, 2120, 2226, 2240, 2320, 2436, 2544, 2688, 2784, 2968, 3045, 3074, 3180, 3248, 3360, 3392, 3480, 3710, 3712, 4060, 4240, 4452, 4480, 4611, 4640, 4872, 5088, 5565, 5568, 5936, 6090, 6148, 6360, 6496, 6720, 6784, 6960, 7420, 7685, 8120, 8480, 8904, 9222, 9280, 9744, 10176, 10759, 11130, 11136, 11872, 12180, 12296, 12720, 12992, 13440, 13920, 14840, 15370, 16240, 16960, 17808, 18444, 18560, 19488, 20352, 21518, 22260, 23055, 23744, 24360, 24592, 25440, 25984, 27840, 29680, 30740, 32277, 32480, 33920, 35616, 36888, 38976, 43036, 44520, 46110, 47488, 48720, 49184, 50880, 53795, 55680, 59360, 61480, 64554, 64960, 71232, 73776, 77952, 86072, 89040, 92220, 97440, 98368, 101760, 107590, 118720, 122960, 129108, 129920, 142464, 147552, 161385, 172144, 178080, 184440, 194880, 196736, 215180, 237440, 245920, 258216, 295104, 322770, 344288, 356160, 368880, 389760, 430360, 491840, 516432, 590208, 645540, 688576, 712320, 737760, 860720, 983680, 1032864, 1291080, 1377152, 1475520, 1721440, 2065728, 2582160, 2951040, 3442880, 4131456, 5164320, 6885760, 10328640, 20657280]

約数ペア:

[(1, 20657280), (2, 10328640), (3, 6885760), (4, 5164320), (5, 4131456), (6, 3442880), (7, 2951040), (8, 2582160), (10, 2065728), (12, 1721440), (14, 1475520), (15, 1377152), (16, 1291080), (20, 1032864), (21, 983680), (24, 860720), (28, 737760), (29, 712320), (30, 688576), (32, 645540), (35, 590208), (40, 516432), (42, 491840), (48, 430360), (53, 389760), (56, 368880), (58, 356160), (60, 344288), (64, 322770), (70, 295104), (80, 258216), (84, 245920), (87, 237440), (96, 215180), (105, 196736), (106, 194880), (112, 184440), (116, 178080), (120, 172144), (128, 161385), (140, 147552), (145, 142464), (159, 129920), (160, 129108), (168, 122960), (174, 118720), (192, 107590), (203, 101760), (210, 98368), (212, 97440), (224, 92220), (232, 89040), (240, 86072), (265, 77952), (280, 73776), (290, 71232), (318, 64960), (320, 64554), (336, 61480), (348, 59360), (371, 55680), (384, 53795), (406, 50880), (420, 49184), (424, 48720), (435, 47488), (448, 46110), (464, 44520), (480, 43036), (530, 38976), (560, 36888), (580, 35616), (609, 33920), (636, 32480), (640, 32277), (672, 30740), (696, 29680), (742, 27840), (795, 25984), (812, 25440), (840, 24592), (848, 24360), (870, 23744), (896, 23055), (928, 22260), (960, 21518), (1015, 20352), (1060, 19488), (1113, 18560), (1120, 18444), (1160, 17808), (1218, 16960), (1272, 16240), (1344, 15370), (1392, 14840), (1484, 13920), (1537, 13440), (1590, 12992), (1624, 12720), (1680, 12296), (1696, 12180), (1740, 11872), (1855, 11136), (1856, 11130), (1920, 10759), (2030, 10176), (2120, 9744), (2226, 9280), (2240, 9222), (2320, 8904), (2436, 8480), (2544, 8120), (2688, 7685), (2784, 7420), (2968, 6960), (3045, 6784), (3074, 6720), (3180, 6496), (3248, 6360), (3360, 6148), (3392, 6090), (3480, 5936), (3710, 5568), (3712, 5565), (4060, 5088), (4240, 4872), (4452, 4640), (4480, 4611)]