257551840

素因数分解:

$2^5\times 5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{19}}^2$

素因数の和:87

約数の個数: 288

約数和(自身を含む): 806500800

約数和(自身を除く): 548948960

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 19, 20, 26, 28, 32, 35, 38, 40, 49, 52, 56, 65, 70, 76, 80, 91, 95, 98, 104, 112, 130, 133, 140, 152, 160, 182, 190, 196, 208, 224, 245, 247, 260, 266, 280, 304, 343, 361, 364, 380, 392, 416, 455, 490, 494, 520, 532, 560, 608, 637, 665, 686, 722, 728, 760, 784, 910, 931, 980, 988, 1040, 1064, 1120, 1235, 1274, 1330, 1372, 1444, 1456, 1520, 1568, 1715, 1729, 1805, 1820, 1862, 1960, 1976, 2080, 2128, 2470, 2527, 2548, 2660, 2744, 2888, 2912, 3040, 3185, 3430, 3458, 3610, 3640, 3724, 3920, 3952, 4256, 4459, 4655, 4693, 4940, 5054, 5096, 5320, 5488, 5776, 6370, 6517, 6860, 6916, 7220, 7280, 7448, 7840, 7904, 8645, 8918, 9310, 9386, 9880, 10108, 10192, 10640, 10976, 11552, 12103, 12635, 12740, 13034, 13720, 13832, 14440, 14560, 14896, 17290, 17689, 17836, 18620, 18772, 19760, 20216, 20384, 21280, 22295, 23465, 24206, 25270, 25480, 26068, 27440, 27664, 28880, 29792, 32585, 32851, 34580, 35378, 35672, 37240, 37544, 39520, 40432, 44590, 46930, 48412, 50540, 50960, 52136, 54880, 55328, 57760, 60515, 65170, 65702, 69160, 70756, 71344, 74480, 75088, 80864, 84721, 88445, 89180, 93860, 96824, 101080, 101920, 104272, 121030, 123823, 130340, 131404, 138320, 141512, 142688, 148960, 150176, 164255, 169442, 176890, 178360, 187720, 193648, 202160, 208544, 229957, 242060, 247646, 260680, 262808, 276640, 283024, 328510, 338884, 353780, 356720, 375440, 387296, 404320, 423605, 459914, 484120, 495292, 521360, 525616, 566048, 619115, 657020, 677768, 707560, 713440, 750880, 847210, 919828, 968240, 990584, 1042720, 1051232, 1149785, 1238230, 1314040, 1355536, 1415120, 1609699, 1694420, 1839656, 1936480, 1981168, 2299570, 2476460, 2628080, 2711072, 2830240, 3219398, 3388840, 3679312, 3962336, 4599140, 4952920, 5256160, 6438796, 6777680, 7358624, 8048495, 9198280, 9905840, 12877592, 13555360, 16096990, 18396560, 19811680, 25755184, 32193980, 36793120, 51510368, 64387960, 128775920, 257551840]

約数ペア:

[(1, 257551840), (2, 128775920), (4, 64387960), (5, 51510368), (7, 36793120), (8, 32193980), (10, 25755184), (13, 19811680), (14, 18396560), (16, 16096990), (19, 13555360), (20, 12877592), (26, 9905840), (28, 9198280), (32, 8048495), (35, 7358624), (38, 6777680), (40, 6438796), (49, 5256160), (52, 4952920), (56, 4599140), (65, 3962336), (70, 3679312), (76, 3388840), (80, 3219398), (91, 2830240), (95, 2711072), (98, 2628080), (104, 2476460), (112, 2299570), (130, 1981168), (133, 1936480), (140, 1839656), (152, 1694420), (160, 1609699), (182, 1415120), (190, 1355536), (196, 1314040), (208, 1238230), (224, 1149785), (245, 1051232), (247, 1042720), (260, 990584), (266, 968240), (280, 919828), (304, 847210), (343, 750880), (361, 713440), (364, 707560), (380, 677768), (392, 657020), (416, 619115), (455, 566048), (490, 525616), (494, 521360), (520, 495292), (532, 484120), (560, 459914), (608, 423605), (637, 404320), (665, 387296), (686, 375440), (722, 356720), (728, 353780), (760, 338884), (784, 328510), (910, 283024), (931, 276640), (980, 262808), (988, 260680), (1040, 247646), (1064, 242060), (1120, 229957), (1235, 208544), (1274, 202160), (1330, 193648), (1372, 187720), (1444, 178360), (1456, 176890), (1520, 169442), (1568, 164255), (1715, 150176), (1729, 148960), (1805, 142688), (1820, 141512), (1862, 138320), (1960, 131404), (1976, 130340), (2080, 123823), (2128, 121030), (2470, 104272), (2527, 101920), (2548, 101080), (2660, 96824), (2744, 93860), (2888, 89180), (2912, 88445), (3040, 84721), (3185, 80864), (3430, 75088), (3458, 74480), (3610, 71344), (3640, 70756), (3724, 69160), (3920, 65702), (3952, 65170), (4256, 60515), (4459, 57760), (4655, 55328), (4693, 54880), (4940, 52136), (5054, 50960), (5096, 50540), (5320, 48412), (5488, 46930), (5776, 44590), (6370, 40432), (6517, 39520), (6860, 37544), (6916, 37240), (7220, 35672), (7280, 35378), (7448, 34580), (7840, 32851), (7904, 32585), (8645, 29792), (8918, 28880), (9310, 27664), (9386, 27440), (9880, 26068), (10108, 25480), (10192, 25270), (10640, 24206), (10976, 23465), (11552, 22295), (12103, 21280), (12635, 20384), (12740, 20216), (13034, 19760), (13720, 18772), (13832, 18620), (14440, 17836), (14560, 17689), (14896, 17290)]