256678240

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{61}}^1$

素因数の和:130

約数の個数: 288

約数和(自身を含む): 805823424

約数和(自身を除く): 549145184

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 17, 20, 26, 28, 32, 34, 35, 40, 52, 56, 61, 65, 68, 70, 80, 85, 91, 104, 112, 119, 122, 130, 136, 140, 160, 170, 182, 208, 221, 224, 238, 244, 260, 272, 280, 289, 305, 340, 364, 416, 427, 442, 455, 476, 488, 520, 544, 560, 578, 595, 610, 680, 728, 793, 854, 884, 910, 952, 976, 1037, 1040, 1105, 1120, 1156, 1190, 1220, 1360, 1445, 1456, 1547, 1586, 1708, 1768, 1820, 1904, 1952, 2023, 2074, 2080, 2135, 2210, 2312, 2380, 2440, 2720, 2890, 2912, 3094, 3172, 3416, 3536, 3640, 3757, 3808, 3965, 4046, 4148, 4270, 4420, 4624, 4760, 4880, 5185, 5551, 5780, 6188, 6344, 6832, 7072, 7259, 7280, 7514, 7735, 7930, 8092, 8296, 8540, 8840, 9248, 9520, 9760, 10115, 10370, 11102, 11560, 12376, 12688, 13481, 13664, 14518, 14560, 15028, 15470, 15860, 16184, 16592, 17080, 17629, 17680, 18785, 19040, 20230, 20740, 22204, 23120, 24752, 25376, 26299, 26962, 27755, 29036, 30056, 30940, 31720, 32368, 33184, 34160, 35258, 35360, 36295, 37570, 40460, 41480, 44408, 46240, 49504, 52598, 53924, 55510, 58072, 60112, 61880, 63440, 64736, 67405, 68320, 70516, 72590, 75140, 80920, 82960, 88145, 88816, 94367, 105196, 107848, 111020, 116144, 120224, 123403, 123760, 126880, 131495, 134810, 141032, 145180, 150280, 161840, 165920, 176290, 177632, 188734, 210392, 215696, 222040, 229177, 232288, 246806, 247520, 262990, 269620, 282064, 290360, 300560, 323680, 352580, 377468, 420784, 431392, 444080, 458354, 471835, 493612, 525980, 539240, 564128, 580720, 601120, 617015, 705160, 754936, 841568, 888160, 916708, 943670, 987224, 1051960, 1078480, 1145885, 1161440, 1234030, 1410320, 1509872, 1604239, 1833416, 1887340, 1974448, 2103920, 2156960, 2291770, 2468060, 2820640, 3019744, 3208478, 3666832, 3774680, 3948896, 4207840, 4583540, 4936120, 6416956, 7333664, 7549360, 8021195, 9167080, 9872240, 12833912, 15098720, 16042390, 18334160, 19744480, 25667824, 32084780, 36668320, 51335648, 64169560, 128339120, 256678240]

約数ペア:

[(1, 256678240), (2, 128339120), (4, 64169560), (5, 51335648), (7, 36668320), (8, 32084780), (10, 25667824), (13, 19744480), (14, 18334160), (16, 16042390), (17, 15098720), (20, 12833912), (26, 9872240), (28, 9167080), (32, 8021195), (34, 7549360), (35, 7333664), (40, 6416956), (52, 4936120), (56, 4583540), (61, 4207840), (65, 3948896), (68, 3774680), (70, 3666832), (80, 3208478), (85, 3019744), (91, 2820640), (104, 2468060), (112, 2291770), (119, 2156960), (122, 2103920), (130, 1974448), (136, 1887340), (140, 1833416), (160, 1604239), (170, 1509872), (182, 1410320), (208, 1234030), (221, 1161440), (224, 1145885), (238, 1078480), (244, 1051960), (260, 987224), (272, 943670), (280, 916708), (289, 888160), (305, 841568), (340, 754936), (364, 705160), (416, 617015), (427, 601120), (442, 580720), (455, 564128), (476, 539240), (488, 525980), (520, 493612), (544, 471835), (560, 458354), (578, 444080), (595, 431392), (610, 420784), (680, 377468), (728, 352580), (793, 323680), (854, 300560), (884, 290360), (910, 282064), (952, 269620), (976, 262990), (1037, 247520), (1040, 246806), (1105, 232288), (1120, 229177), (1156, 222040), (1190, 215696), (1220, 210392), (1360, 188734), (1445, 177632), (1456, 176290), (1547, 165920), (1586, 161840), (1708, 150280), (1768, 145180), (1820, 141032), (1904, 134810), (1952, 131495), (2023, 126880), (2074, 123760), (2080, 123403), (2135, 120224), (2210, 116144), (2312, 111020), (2380, 107848), (2440, 105196), (2720, 94367), (2890, 88816), (2912, 88145), (3094, 82960), (3172, 80920), (3416, 75140), (3536, 72590), (3640, 70516), (3757, 68320), (3808, 67405), (3965, 64736), (4046, 63440), (4148, 61880), (4270, 60112), (4420, 58072), (4624, 55510), (4760, 53924), (4880, 52598), (5185, 49504), (5551, 46240), (5780, 44408), (6188, 41480), (6344, 40460), (6832, 37570), (7072, 36295), (7259, 35360), (7280, 35258), (7514, 34160), (7735, 33184), (7930, 32368), (8092, 31720), (8296, 30940), (8540, 30056), (8840, 29036), (9248, 27755), (9520, 26962), (9760, 26299), (10115, 25376), (10370, 24752), (11102, 23120), (11560, 22204), (12376, 20740), (12688, 20230), (13481, 19040), (13664, 18785), (14518, 17680), (14560, 17629), (15028, 17080), (15470, 16592), (15860, 16184)]