128709420

素因数分解:

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

素因数の和:292

約数の個数: 144

約数和(自身を含む): 436988160

約数和(自身を除く): 308278740

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 57, 60, 70, 76, 84, 95, 105, 114, 127, 133, 140, 190, 210, 228, 254, 266, 285, 380, 381, 399, 420, 508, 532, 570, 635, 665, 762, 798, 889, 1140, 1270, 1330, 1524, 1596, 1778, 1905, 1995, 2413, 2540, 2660, 2667, 3556, 3810, 3990, 4445, 4826, 5334, 7239, 7620, 7980, 8890, 9652, 10668, 12065, 13335, 14478, 16129, 16891, 17780, 24130, 26670, 28956, 32258, 33782, 36195, 48260, 48387, 50673, 53340, 64516, 67564, 72390, 80645, 84455, 96774, 101346, 112903, 144780, 161290, 168910, 193548, 202692, 225806, 241935, 253365, 306451, 322580, 337820, 338709, 451612, 483870, 506730, 564515, 612902, 677418, 919353, 967740, 1013460, 1129030, 1225804, 1354836, 1532255, 1693545, 1838706, 2145157, 2258060, 3064510, 3387090, 3677412, 4290314, 4596765, 6129020, 6435471, 6774180, 8580628, 9193530, 10725785, 12870942, 18387060, 21451570, 25741884, 32177355, 42903140, 64354710, 128709420]

約数ペア:

[(1, 128709420), (2, 64354710), (3, 42903140), (4, 32177355), (5, 25741884), (6, 21451570), (7, 18387060), (10, 12870942), (12, 10725785), (14, 9193530), (15, 8580628), (19, 6774180), (20, 6435471), (21, 6129020), (28, 4596765), (30, 4290314), (35, 3677412), (38, 3387090), (42, 3064510), (57, 2258060), (60, 2145157), (70, 1838706), (76, 1693545), (84, 1532255), (95, 1354836), (105, 1225804), (114, 1129030), (127, 1013460), (133, 967740), (140, 919353), (190, 677418), (210, 612902), (228, 564515), (254, 506730), (266, 483870), (285, 451612), (380, 338709), (381, 337820), (399, 322580), (420, 306451), (508, 253365), (532, 241935), (570, 225806), (635, 202692), (665, 193548), (762, 168910), (798, 161290), (889, 144780), (1140, 112903), (1270, 101346), (1330, 96774), (1524, 84455), (1596, 80645), (1778, 72390), (1905, 67564), (1995, 64516), (2413, 53340), (2540, 50673), (2660, 48387), (2667, 48260), (3556, 36195), (3810, 33782), (3990, 32258), (4445, 28956), (4826, 26670), (5334, 24130), (7239, 17780), (7620, 16891), (7980, 16129), (8890, 14478), (9652, 13335), (10668, 12065)]