256578660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{199}}^1$

素因数の和:275

約数の個数: 288

約数和(自身を含む): 917280000

約数和(自身を除く): 660701340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 19, 20, 26, 29, 30, 36, 38, 39, 45, 52, 57, 58, 60, 65, 76, 78, 87, 90, 95, 114, 116, 117, 130, 145, 156, 171, 174, 180, 190, 195, 199, 228, 234, 247, 260, 261, 285, 290, 342, 348, 377, 380, 390, 398, 435, 468, 494, 522, 551, 570, 580, 585, 597, 684, 741, 754, 780, 796, 855, 870, 988, 995, 1044, 1102, 1131, 1140, 1170, 1194, 1235, 1305, 1482, 1508, 1653, 1710, 1740, 1791, 1885, 1990, 2204, 2223, 2262, 2340, 2388, 2470, 2587, 2610, 2755, 2964, 2985, 3306, 3393, 3420, 3582, 3705, 3770, 3781, 3980, 4446, 4524, 4940, 4959, 5174, 5220, 5510, 5655, 5771, 5970, 6612, 6786, 7163, 7164, 7410, 7540, 7562, 7761, 8265, 8892, 8955, 9918, 10348, 11020, 11115, 11310, 11343, 11542, 11940, 12935, 13572, 14326, 14820, 15124, 15522, 16530, 16965, 17313, 17910, 18905, 19836, 21489, 22230, 22620, 22686, 23084, 23283, 24795, 25870, 28652, 28855, 31044, 33060, 33930, 34029, 34626, 35815, 35820, 37810, 38805, 42978, 44460, 45372, 46566, 49153, 49590, 51740, 51939, 56715, 57710, 64467, 67860, 68058, 69252, 71630, 75023, 75620, 77610, 85956, 86565, 93132, 98306, 99180, 103878, 107445, 109649, 113430, 115420, 116415, 128934, 136116, 143260, 147459, 150046, 155220, 170145, 173130, 196612, 207756, 214890, 219298, 225069, 226860, 232830, 245765, 257868, 259695, 294918, 300092, 322335, 328947, 340290, 346260, 375115, 429780, 438596, 442377, 450138, 465660, 491530, 519390, 548245, 589836, 644670, 657894, 675207, 680580, 737295, 750230, 884754, 900276, 983060, 986841, 1038780, 1096490, 1125345, 1289340, 1315788, 1350414, 1425437, 1474590, 1500460, 1644735, 1769508, 1973682, 2192980, 2211885, 2250690, 2700828, 2850874, 2949180, 3289470, 3376035, 3947364, 4276311, 4423770, 4501380, 4934205, 5701748, 6578940, 6752070, 7127185, 8552622, 8847540, 9868410, 12828933, 13504140, 14254370, 17105244, 19736820, 21381555, 25657866, 28508740, 42763110, 51315732, 64144665, 85526220, 128289330, 256578660]

約数ペア:

[(1, 256578660), (2, 128289330), (3, 85526220), (4, 64144665), (5, 51315732), (6, 42763110), (9, 28508740), (10, 25657866), (12, 21381555), (13, 19736820), (15, 17105244), (18, 14254370), (19, 13504140), (20, 12828933), (26, 9868410), (29, 8847540), (30, 8552622), (36, 7127185), (38, 6752070), (39, 6578940), (45, 5701748), (52, 4934205), (57, 4501380), (58, 4423770), (60, 4276311), (65, 3947364), (76, 3376035), (78, 3289470), (87, 2949180), (90, 2850874), (95, 2700828), (114, 2250690), (116, 2211885), (117, 2192980), (130, 1973682), (145, 1769508), (156, 1644735), (171, 1500460), (174, 1474590), (180, 1425437), (190, 1350414), (195, 1315788), (199, 1289340), (228, 1125345), (234, 1096490), (247, 1038780), (260, 986841), (261, 983060), (285, 900276), (290, 884754), (342, 750230), (348, 737295), (377, 680580), (380, 675207), (390, 657894), (398, 644670), (435, 589836), (468, 548245), (494, 519390), (522, 491530), (551, 465660), (570, 450138), (580, 442377), (585, 438596), (597, 429780), (684, 375115), (741, 346260), (754, 340290), (780, 328947), (796, 322335), (855, 300092), (870, 294918), (988, 259695), (995, 257868), (1044, 245765), (1102, 232830), (1131, 226860), (1140, 225069), (1170, 219298), (1194, 214890), (1235, 207756), (1305, 196612), (1482, 173130), (1508, 170145), (1653, 155220), (1710, 150046), (1740, 147459), (1791, 143260), (1885, 136116), (1990, 128934), (2204, 116415), (2223, 115420), (2262, 113430), (2340, 109649), (2388, 107445), (2470, 103878), (2587, 99180), (2610, 98306), (2755, 93132), (2964, 86565), (2985, 85956), (3306, 77610), (3393, 75620), (3420, 75023), (3582, 71630), (3705, 69252), (3770, 68058), (3781, 67860), (3980, 64467), (4446, 57710), (4524, 56715), (4940, 51939), (4959, 51740), (5174, 49590), (5220, 49153), (5510, 46566), (5655, 45372), (5771, 44460), (5970, 42978), (6612, 38805), (6786, 37810), (7163, 35820), (7164, 35815), (7410, 34626), (7540, 34029), (7562, 33930), (7761, 33060), (8265, 31044), (8892, 28855), (8955, 28652), (9918, 25870), (10348, 24795), (11020, 23283), (11115, 23084), (11310, 22686), (11343, 22620), (11542, 22230), (11940, 21489), (12935, 19836), (13572, 18905), (14326, 17910), (14820, 17313), (15124, 16965), (15522, 16530)]