257281920

素因数分解:

$2^7\times 3^4\times 5^1\times 7^1\times {\mathrm{709}}^1$

素因数の和:747

約数の個数: 320

約数和(自身を含む): 1051538400

約数和(自身を除く): 794256480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 64, 70, 72, 80, 81, 84, 90, 96, 105, 108, 112, 120, 126, 128, 135, 140, 144, 160, 162, 168, 180, 189, 192, 210, 216, 224, 240, 252, 270, 280, 288, 315, 320, 324, 336, 360, 378, 384, 405, 420, 432, 448, 480, 504, 540, 560, 567, 576, 630, 640, 648, 672, 709, 720, 756, 810, 840, 864, 896, 945, 960, 1008, 1080, 1120, 1134, 1152, 1260, 1296, 1344, 1418, 1440, 1512, 1620, 1680, 1728, 1890, 1920, 2016, 2127, 2160, 2240, 2268, 2520, 2592, 2688, 2835, 2836, 2880, 3024, 3240, 3360, 3456, 3545, 3780, 4032, 4254, 4320, 4480, 4536, 4963, 5040, 5184, 5670, 5672, 5760, 6048, 6381, 6480, 6720, 7090, 7560, 8064, 8508, 8640, 9072, 9926, 10080, 10368, 10635, 11340, 11344, 12096, 12762, 12960, 13440, 14180, 14889, 15120, 17016, 17280, 18144, 19143, 19852, 20160, 21270, 22680, 22688, 24192, 24815, 25524, 25920, 28360, 29778, 30240, 31905, 34032, 36288, 38286, 39704, 40320, 42540, 44667, 45360, 45376, 49630, 51048, 51840, 56720, 57429, 59556, 60480, 63810, 68064, 72576, 74445, 76572, 79408, 85080, 89334, 90720, 90752, 95715, 99260, 102096, 113440, 114858, 119112, 120960, 127620, 134001, 136128, 148890, 153144, 158816, 170160, 178668, 181440, 191430, 198520, 204192, 223335, 226880, 229716, 238224, 255240, 268002, 272256, 287145, 297780, 306288, 317632, 340320, 357336, 362880, 382860, 397040, 402003, 408384, 446670, 453760, 459432, 476448, 510480, 536004, 574290, 595560, 612576, 635264, 670005, 680640, 714672, 765720, 794080, 804006, 816768, 893340, 918864, 952896, 1020960, 1072008, 1148580, 1191120, 1225152, 1340010, 1361280, 1429344, 1531440, 1588160, 1608012, 1786680, 1837728, 1905792, 2010015, 2041920, 2144016, 2297160, 2382240, 2450304, 2680020, 2858688, 3062880, 3176320, 3216024, 3573360, 3675456, 4020030, 4083840, 4288032, 4594320, 4764480, 5360040, 5717376, 6125760, 6432048, 7146720, 7350912, 8040060, 8576064, 9188640, 9528960, 10720080, 12251520, 12864096, 14293440, 16080120, 17152128, 18377280, 21440160, 25728192, 28586880, 32160240, 36754560, 42880320, 51456384, 64320480, 85760640, 128640960, 257281920]

約数ペア:

[(1, 257281920), (2, 128640960), (3, 85760640), (4, 64320480), (5, 51456384), (6, 42880320), (7, 36754560), (8, 32160240), (9, 28586880), (10, 25728192), (12, 21440160), (14, 18377280), (15, 17152128), (16, 16080120), (18, 14293440), (20, 12864096), (21, 12251520), (24, 10720080), (27, 9528960), (28, 9188640), (30, 8576064), (32, 8040060), (35, 7350912), (36, 7146720), (40, 6432048), (42, 6125760), (45, 5717376), (48, 5360040), (54, 4764480), (56, 4594320), (60, 4288032), (63, 4083840), (64, 4020030), (70, 3675456), (72, 3573360), (80, 3216024), (81, 3176320), (84, 3062880), (90, 2858688), (96, 2680020), (105, 2450304), (108, 2382240), (112, 2297160), (120, 2144016), (126, 2041920), (128, 2010015), (135, 1905792), (140, 1837728), (144, 1786680), (160, 1608012), (162, 1588160), (168, 1531440), (180, 1429344), (189, 1361280), (192, 1340010), (210, 1225152), (216, 1191120), (224, 1148580), (240, 1072008), (252, 1020960), (270, 952896), (280, 918864), (288, 893340), (315, 816768), (320, 804006), (324, 794080), (336, 765720), (360, 714672), (378, 680640), (384, 670005), (405, 635264), (420, 612576), (432, 595560), (448, 574290), (480, 536004), (504, 510480), (540, 476448), (560, 459432), (567, 453760), (576, 446670), (630, 408384), (640, 402003), (648, 397040), (672, 382860), (709, 362880), (720, 357336), (756, 340320), (810, 317632), (840, 306288), (864, 297780), (896, 287145), (945, 272256), (960, 268002), (1008, 255240), (1080, 238224), (1120, 229716), (1134, 226880), (1152, 223335), (1260, 204192), (1296, 198520), (1344, 191430), (1418, 181440), (1440, 178668), (1512, 170160), (1620, 158816), (1680, 153144), (1728, 148890), (1890, 136128), (1920, 134001), (2016, 127620), (2127, 120960), (2160, 119112), (2240, 114858), (2268, 113440), (2520, 102096), (2592, 99260), (2688, 95715), (2835, 90752), (2836, 90720), (2880, 89334), (3024, 85080), (3240, 79408), (3360, 76572), (3456, 74445), (3545, 72576), (3780, 68064), (4032, 63810), (4254, 60480), (4320, 59556), (4480, 57429), (4536, 56720), (4963, 51840), (5040, 51048), (5184, 49630), (5670, 45376), (5672, 45360), (5760, 44667), (6048, 42540), (6381, 40320), (6480, 39704), (6720, 38286), (7090, 36288), (7560, 34032), (8064, 31905), (8508, 30240), (8640, 29778), (9072, 28360), (9926, 25920), (10080, 25524), (10368, 24815), (10635, 24192), (11340, 22688), (11344, 22680), (12096, 21270), (12762, 20160), (12960, 19852), (13440, 19143), (14180, 18144), (14889, 17280), (15120, 17016)]