19880640

素因数分解:

$2^6\times 3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1$

素因数の和:101

約数の個数: 280

約数和(自身を含む): 77449680

約数和(自身を除く): 57569040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 27, 30, 32, 36, 39, 40, 45, 48, 52, 54, 59, 60, 64, 65, 72, 78, 80, 81, 90, 96, 104, 108, 117, 118, 120, 130, 135, 144, 156, 160, 162, 177, 180, 192, 195, 208, 216, 234, 236, 240, 260, 270, 288, 295, 312, 320, 324, 351, 354, 360, 390, 405, 416, 432, 468, 472, 480, 520, 531, 540, 576, 585, 590, 624, 648, 702, 708, 720, 767, 780, 810, 832, 864, 885, 936, 944, 960, 1040, 1053, 1062, 1080, 1170, 1180, 1248, 1296, 1404, 1416, 1440, 1534, 1560, 1593, 1620, 1728, 1755, 1770, 1872, 1888, 2080, 2106, 2124, 2160, 2301, 2340, 2360, 2496, 2592, 2655, 2808, 2832, 2880, 3068, 3120, 3186, 3240, 3510, 3540, 3744, 3776, 3835, 4160, 4212, 4248, 4320, 4602, 4680, 4720, 4779, 5184, 5265, 5310, 5616, 5664, 6136, 6240, 6372, 6480, 6903, 7020, 7080, 7488, 7670, 7965, 8424, 8496, 8640, 9204, 9360, 9440, 9558, 10530, 10620, 11232, 11328, 11505, 12272, 12480, 12744, 12960, 13806, 14040, 14160, 15340, 15930, 16848, 16992, 18408, 18720, 18880, 19116, 20709, 21060, 21240, 22464, 23010, 23895, 24544, 25488, 25920, 27612, 28080, 28320, 30680, 31860, 33696, 33984, 34515, 36816, 37440, 38232, 41418, 42120, 42480, 46020, 47790, 49088, 50976, 55224, 56160, 56640, 61360, 62127, 63720, 67392, 69030, 73632, 76464, 82836, 84240, 84960, 92040, 95580, 101952, 103545, 110448, 112320, 122720, 124254, 127440, 138060, 147264, 152928, 165672, 168480, 169920, 184080, 191160, 207090, 220896, 245440, 248508, 254880, 276120, 305856, 310635, 331344, 336960, 368160, 382320, 414180, 441792, 497016, 509760, 552240, 621270, 662688, 736320, 764640, 828360, 994032, 1104480, 1242540, 1325376, 1529280, 1656720, 1988064, 2208960, 2485080, 3313440, 3976128, 4970160, 6626880, 9940320, 19880640]

約数ペア:

[(1, 19880640), (2, 9940320), (3, 6626880), (4, 4970160), (5, 3976128), (6, 3313440), (8, 2485080), (9, 2208960), (10, 1988064), (12, 1656720), (13, 1529280), (15, 1325376), (16, 1242540), (18, 1104480), (20, 994032), (24, 828360), (26, 764640), (27, 736320), (30, 662688), (32, 621270), (36, 552240), (39, 509760), (40, 497016), (45, 441792), (48, 414180), (52, 382320), (54, 368160), (59, 336960), (60, 331344), (64, 310635), (65, 305856), (72, 276120), (78, 254880), (80, 248508), (81, 245440), (90, 220896), (96, 207090), (104, 191160), (108, 184080), (117, 169920), (118, 168480), (120, 165672), (130, 152928), (135, 147264), (144, 138060), (156, 127440), (160, 124254), (162, 122720), (177, 112320), (180, 110448), (192, 103545), (195, 101952), (208, 95580), (216, 92040), (234, 84960), (236, 84240), (240, 82836), (260, 76464), (270, 73632), (288, 69030), (295, 67392), (312, 63720), (320, 62127), (324, 61360), (351, 56640), (354, 56160), (360, 55224), (390, 50976), (405, 49088), (416, 47790), (432, 46020), (468, 42480), (472, 42120), (480, 41418), (520, 38232), (531, 37440), (540, 36816), (576, 34515), (585, 33984), (590, 33696), (624, 31860), (648, 30680), (702, 28320), (708, 28080), (720, 27612), (767, 25920), (780, 25488), (810, 24544), (832, 23895), (864, 23010), (885, 22464), (936, 21240), (944, 21060), (960, 20709), (1040, 19116), (1053, 18880), (1062, 18720), (1080, 18408), (1170, 16992), (1180, 16848), (1248, 15930), (1296, 15340), (1404, 14160), (1416, 14040), (1440, 13806), (1534, 12960), (1560, 12744), (1593, 12480), (1620, 12272), (1728, 11505), (1755, 11328), (1770, 11232), (1872, 10620), (1888, 10530), (2080, 9558), (2106, 9440), (2124, 9360), (2160, 9204), (2301, 8640), (2340, 8496), (2360, 8424), (2496, 7965), (2592, 7670), (2655, 7488), (2808, 7080), (2832, 7020), (2880, 6903), (3068, 6480), (3120, 6372), (3186, 6240), (3240, 6136), (3510, 5664), (3540, 5616), (3744, 5310), (3776, 5265), (3835, 5184), (4160, 4779), (4212, 4720), (4248, 4680), (4320, 4602)]