257418840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{127}}^2$

素因数の和:294

約数の個数: 192

約数和(自身を含む): 936403200

約数和(自身を除く): 678984360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 56, 57, 60, 70, 76, 84, 95, 105, 114, 120, 127, 133, 140, 152, 168, 190, 210, 228, 254, 266, 280, 285, 380, 381, 399, 420, 456, 508, 532, 570, 635, 665, 760, 762, 798, 840, 889, 1016, 1064, 1140, 1270, 1330, 1524, 1596, 1778, 1905, 1995, 2280, 2413, 2540, 2660, 2667, 3048, 3192, 3556, 3810, 3990, 4445, 4826, 5080, 5320, 5334, 7112, 7239, 7620, 7980, 8890, 9652, 10668, 12065, 13335, 14478, 15240, 15960, 16129, 16891, 17780, 19304, 21336, 24130, 26670, 28956, 32258, 33782, 35560, 36195, 48260, 48387, 50673, 53340, 57912, 64516, 67564, 72390, 80645, 84455, 96520, 96774, 101346, 106680, 112903, 129032, 135128, 144780, 161290, 168910, 193548, 202692, 225806, 241935, 253365, 289560, 306451, 322580, 337820, 338709, 387096, 405384, 451612, 483870, 506730, 564515, 612902, 645160, 675640, 677418, 903224, 919353, 967740, 1013460, 1129030, 1225804, 1354836, 1532255, 1693545, 1838706, 1935480, 2026920, 2145157, 2258060, 2451608, 2709672, 3064510, 3387090, 3677412, 4290314, 4516120, 4596765, 6129020, 6435471, 6774180, 7354824, 8580628, 9193530, 10725785, 12258040, 12870942, 13548360, 17161256, 18387060, 21451570, 25741884, 32177355, 36774120, 42903140, 51483768, 64354710, 85806280, 128709420, 257418840]

約数ペア:

[(1, 257418840), (2, 128709420), (3, 85806280), (4, 64354710), (5, 51483768), (6, 42903140), (7, 36774120), (8, 32177355), (10, 25741884), (12, 21451570), (14, 18387060), (15, 17161256), (19, 13548360), (20, 12870942), (21, 12258040), (24, 10725785), (28, 9193530), (30, 8580628), (35, 7354824), (38, 6774180), (40, 6435471), (42, 6129020), (56, 4596765), (57, 4516120), (60, 4290314), (70, 3677412), (76, 3387090), (84, 3064510), (95, 2709672), (105, 2451608), (114, 2258060), (120, 2145157), (127, 2026920), (133, 1935480), (140, 1838706), (152, 1693545), (168, 1532255), (190, 1354836), (210, 1225804), (228, 1129030), (254, 1013460), (266, 967740), (280, 919353), (285, 903224), (380, 677418), (381, 675640), (399, 645160), (420, 612902), (456, 564515), (508, 506730), (532, 483870), (570, 451612), (635, 405384), (665, 387096), (760, 338709), (762, 337820), (798, 322580), (840, 306451), (889, 289560), (1016, 253365), (1064, 241935), (1140, 225806), (1270, 202692), (1330, 193548), (1524, 168910), (1596, 161290), (1778, 144780), (1905, 135128), (1995, 129032), (2280, 112903), (2413, 106680), (2540, 101346), (2660, 96774), (2667, 96520), (3048, 84455), (3192, 80645), (3556, 72390), (3810, 67564), (3990, 64516), (4445, 57912), (4826, 53340), (5080, 50673), (5320, 48387), (5334, 48260), (7112, 36195), (7239, 35560), (7620, 33782), (7980, 32258), (8890, 28956), (9652, 26670), (10668, 24130), (12065, 21336), (13335, 19304), (14478, 17780), (15240, 16891), (15960, 16129)]