51381540

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1$

素因数の和:248

約数の個数: 240

約数和(自身を含む): 193197312

約数和(自身を除く): 141815772

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 23, 27, 28, 30, 35, 36, 42, 45, 46, 54, 60, 63, 69, 70, 81, 84, 90, 92, 105, 108, 115, 126, 135, 138, 140, 161, 162, 180, 189, 197, 207, 210, 230, 252, 270, 276, 315, 322, 324, 345, 378, 394, 405, 414, 420, 460, 483, 540, 567, 591, 621, 630, 644, 690, 756, 788, 805, 810, 828, 945, 966, 985, 1035, 1134, 1182, 1242, 1260, 1379, 1380, 1449, 1610, 1620, 1773, 1863, 1890, 1932, 1970, 2070, 2268, 2364, 2415, 2484, 2758, 2835, 2898, 2955, 3105, 3220, 3546, 3726, 3780, 3940, 4137, 4140, 4347, 4531, 4830, 5319, 5516, 5670, 5796, 5910, 6210, 6895, 7092, 7245, 7452, 8274, 8694, 8865, 9062, 9315, 9660, 10638, 11340, 11820, 12411, 12420, 13041, 13593, 13790, 14490, 15957, 16548, 17388, 17730, 18124, 18630, 20685, 21276, 21735, 22655, 24822, 26082, 26595, 27186, 27580, 28980, 31717, 31914, 35460, 37233, 37260, 40779, 41370, 43470, 45310, 49644, 52164, 53190, 54372, 62055, 63434, 63828, 65205, 67965, 74466, 79785, 81558, 82740, 86940, 90620, 95151, 106380, 111699, 122337, 124110, 126868, 130410, 135930, 148932, 158585, 159570, 163116, 186165, 190302, 203895, 223398, 244674, 248220, 260820, 271860, 285453, 317170, 319140, 367011, 372330, 380604, 407790, 446796, 475755, 489348, 558495, 570906, 611685, 634340, 734022, 744660, 815580, 856359, 951510, 1116990, 1141812, 1223370, 1427265, 1468044, 1712718, 1835055, 1903020, 2233980, 2446740, 2569077, 2854530, 3425436, 3670110, 4281795, 5138154, 5709060, 7340220, 8563590, 10276308, 12845385, 17127180, 25690770, 51381540]

約数ペア:

[(1, 51381540), (2, 25690770), (3, 17127180), (4, 12845385), (5, 10276308), (6, 8563590), (7, 7340220), (9, 5709060), (10, 5138154), (12, 4281795), (14, 3670110), (15, 3425436), (18, 2854530), (20, 2569077), (21, 2446740), (23, 2233980), (27, 1903020), (28, 1835055), (30, 1712718), (35, 1468044), (36, 1427265), (42, 1223370), (45, 1141812), (46, 1116990), (54, 951510), (60, 856359), (63, 815580), (69, 744660), (70, 734022), (81, 634340), (84, 611685), (90, 570906), (92, 558495), (105, 489348), (108, 475755), (115, 446796), (126, 407790), (135, 380604), (138, 372330), (140, 367011), (161, 319140), (162, 317170), (180, 285453), (189, 271860), (197, 260820), (207, 248220), (210, 244674), (230, 223398), (252, 203895), (270, 190302), (276, 186165), (315, 163116), (322, 159570), (324, 158585), (345, 148932), (378, 135930), (394, 130410), (405, 126868), (414, 124110), (420, 122337), (460, 111699), (483, 106380), (540, 95151), (567, 90620), (591, 86940), (621, 82740), (630, 81558), (644, 79785), (690, 74466), (756, 67965), (788, 65205), (805, 63828), (810, 63434), (828, 62055), (945, 54372), (966, 53190), (985, 52164), (1035, 49644), (1134, 45310), (1182, 43470), (1242, 41370), (1260, 40779), (1379, 37260), (1380, 37233), (1449, 35460), (1610, 31914), (1620, 31717), (1773, 28980), (1863, 27580), (1890, 27186), (1932, 26595), (1970, 26082), (2070, 24822), (2268, 22655), (2364, 21735), (2415, 21276), (2484, 20685), (2758, 18630), (2835, 18124), (2898, 17730), (2955, 17388), (3105, 16548), (3220, 15957), (3546, 14490), (3726, 13790), (3780, 13593), (3940, 13041), (4137, 12420), (4140, 12411), (4347, 11820), (4531, 11340), (4830, 10638), (5319, 9660), (5516, 9315), (5670, 9062), (5796, 8865), (5910, 8694), (6210, 8274), (6895, 7452), (7092, 7245)]