256987920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:222

約数の個数: 320

約数和(自身を含む): 979937280

約数和(自身を除く): 722949360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 48, 56, 57, 60, 70, 76, 80, 83, 84, 95, 97, 105, 112, 114, 120, 133, 140, 152, 166, 168, 190, 194, 210, 228, 240, 249, 266, 280, 285, 291, 304, 332, 336, 380, 388, 399, 415, 420, 456, 485, 498, 532, 560, 570, 581, 582, 664, 665, 679, 760, 776, 798, 830, 840, 912, 970, 996, 1064, 1140, 1162, 1164, 1245, 1328, 1330, 1358, 1455, 1520, 1552, 1577, 1596, 1660, 1680, 1743, 1843, 1940, 1992, 1995, 2037, 2128, 2280, 2324, 2328, 2490, 2660, 2716, 2905, 2910, 3154, 3192, 3320, 3395, 3486, 3686, 3880, 3984, 3990, 4074, 4560, 4648, 4656, 4731, 4980, 5320, 5432, 5529, 5810, 5820, 6308, 6384, 6640, 6790, 6972, 7372, 7760, 7885, 7980, 8051, 8148, 8715, 9215, 9296, 9462, 9960, 10185, 10640, 10864, 11039, 11058, 11620, 11640, 12616, 12901, 13580, 13944, 14744, 15770, 15960, 16102, 16296, 17430, 18430, 18924, 19920, 20370, 22078, 22116, 23240, 23280, 23655, 24153, 25232, 25802, 27160, 27645, 27888, 29488, 31540, 31920, 32204, 32592, 33117, 34860, 36860, 37848, 38703, 40255, 40740, 44156, 44232, 46480, 47310, 48306, 51604, 54320, 55195, 55290, 56357, 63080, 64408, 64505, 66234, 69720, 73720, 75696, 77406, 80510, 81480, 88312, 88464, 94620, 96612, 103208, 110390, 110580, 112714, 120765, 126160, 128816, 129010, 132468, 139440, 147440, 152969, 154812, 161020, 162960, 165585, 169071, 176624, 189240, 193224, 193515, 206416, 220780, 221160, 225428, 241530, 258020, 264936, 281785, 305938, 309624, 322040, 331170, 338142, 378480, 386448, 387030, 441560, 442320, 450856, 458907, 483060, 516040, 529872, 563570, 611876, 619248, 644080, 662340, 676284, 764845, 774060, 845355, 883120, 901712, 917814, 966120, 1032080, 1070783, 1127140, 1223752, 1324680, 1352568, 1529690, 1548120, 1690710, 1835628, 1932240, 2141566, 2254280, 2294535, 2447504, 2649360, 2705136, 3059380, 3096240, 3212349, 3381420, 3671256, 4283132, 4508560, 4589070, 5353915, 6118760, 6424698, 6762840, 7342512, 8566264, 9178140, 10707830, 12237520, 12849396, 13525680, 16061745, 17132528, 18356280, 21415660, 25698792, 32123490, 36712560, 42831320, 51397584, 64246980, 85662640, 128493960, 256987920]

約数ペア:

[(1, 256987920), (2, 128493960), (3, 85662640), (4, 64246980), (5, 51397584), (6, 42831320), (7, 36712560), (8, 32123490), (10, 25698792), (12, 21415660), (14, 18356280), (15, 17132528), (16, 16061745), (19, 13525680), (20, 12849396), (21, 12237520), (24, 10707830), (28, 9178140), (30, 8566264), (35, 7342512), (38, 6762840), (40, 6424698), (42, 6118760), (48, 5353915), (56, 4589070), (57, 4508560), (60, 4283132), (70, 3671256), (76, 3381420), (80, 3212349), (83, 3096240), (84, 3059380), (95, 2705136), (97, 2649360), (105, 2447504), (112, 2294535), (114, 2254280), (120, 2141566), (133, 1932240), (140, 1835628), (152, 1690710), (166, 1548120), (168, 1529690), (190, 1352568), (194, 1324680), (210, 1223752), (228, 1127140), (240, 1070783), (249, 1032080), (266, 966120), (280, 917814), (285, 901712), (291, 883120), (304, 845355), (332, 774060), (336, 764845), (380, 676284), (388, 662340), (399, 644080), (415, 619248), (420, 611876), (456, 563570), (485, 529872), (498, 516040), (532, 483060), (560, 458907), (570, 450856), (581, 442320), (582, 441560), (664, 387030), (665, 386448), (679, 378480), (760, 338142), (776, 331170), (798, 322040), (830, 309624), (840, 305938), (912, 281785), (970, 264936), (996, 258020), (1064, 241530), (1140, 225428), (1162, 221160), (1164, 220780), (1245, 206416), (1328, 193515), (1330, 193224), (1358, 189240), (1455, 176624), (1520, 169071), (1552, 165585), (1577, 162960), (1596, 161020), (1660, 154812), (1680, 152969), (1743, 147440), (1843, 139440), (1940, 132468), (1992, 129010), (1995, 128816), (2037, 126160), (2128, 120765), (2280, 112714), (2324, 110580), (2328, 110390), (2490, 103208), (2660, 96612), (2716, 94620), (2905, 88464), (2910, 88312), (3154, 81480), (3192, 80510), (3320, 77406), (3395, 75696), (3486, 73720), (3686, 69720), (3880, 66234), (3984, 64505), (3990, 64408), (4074, 63080), (4560, 56357), (4648, 55290), (4656, 55195), (4731, 54320), (4980, 51604), (5320, 48306), (5432, 47310), (5529, 46480), (5810, 44232), (5820, 44156), (6308, 40740), (6384, 40255), (6640, 38703), (6790, 37848), (6972, 36860), (7372, 34860), (7760, 33117), (7885, 32592), (7980, 32204), (8051, 31920), (8148, 31540), (8715, 29488), (9215, 27888), (9296, 27645), (9462, 27160), (9960, 25802), (10185, 25232), (10640, 24153), (10864, 23655), (11039, 23280), (11058, 23240), (11620, 22116), (11640, 22078), (12616, 20370), (12901, 19920), (13580, 18924), (13944, 18430), (14744, 17430), (15770, 16296), (15960, 16102)]