256311720

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{193}}^1$

素因数の和:265

約数の個数: 384

約数和(自身を含む): 1045923840

約数和(自身を除く): 789612120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 17, 18, 20, 21, 24, 28, 30, 31, 34, 35, 36, 40, 42, 45, 51, 56, 60, 62, 63, 68, 70, 72, 84, 85, 90, 93, 102, 105, 119, 120, 124, 126, 136, 140, 153, 155, 168, 170, 180, 186, 193, 204, 210, 217, 238, 248, 252, 255, 279, 280, 306, 310, 315, 340, 357, 360, 372, 386, 408, 420, 434, 465, 476, 504, 510, 527, 558, 579, 595, 612, 620, 630, 651, 680, 714, 744, 765, 772, 840, 868, 930, 952, 965, 1020, 1054, 1071, 1085, 1116, 1158, 1190, 1224, 1240, 1260, 1302, 1351, 1395, 1428, 1530, 1544, 1581, 1736, 1737, 1785, 1860, 1930, 1953, 2040, 2108, 2142, 2170, 2232, 2316, 2380, 2520, 2604, 2635, 2702, 2790, 2856, 2895, 3060, 3162, 3255, 3281, 3474, 3570, 3689, 3720, 3860, 3906, 4053, 4216, 4284, 4340, 4632, 4743, 4760, 5208, 5270, 5355, 5404, 5580, 5790, 5983, 6120, 6324, 6510, 6562, 6755, 6948, 7140, 7378, 7720, 7812, 7905, 8106, 8568, 8680, 8685, 9486, 9765, 9843, 10540, 10710, 10808, 11067, 11160, 11580, 11966, 12159, 12648, 13020, 13124, 13510, 13896, 14280, 14756, 15624, 15810, 16212, 16405, 17370, 17949, 18445, 18972, 19530, 19686, 20265, 21080, 21420, 22134, 22967, 23160, 23715, 23932, 24318, 26040, 26248, 27020, 29512, 29529, 29915, 31620, 32424, 32810, 33201, 34740, 35898, 36890, 37944, 39060, 39372, 40530, 41881, 42840, 44268, 45934, 47430, 47864, 48636, 49215, 53847, 54040, 55335, 59058, 59830, 60795, 63240, 65620, 66402, 68901, 69480, 71796, 73780, 78120, 78744, 81060, 83762, 88536, 89745, 91868, 94860, 97272, 98430, 101711, 107694, 110670, 114835, 118116, 119660, 121590, 125643, 131240, 132804, 137802, 143592, 147560, 147645, 162120, 166005, 167524, 179490, 183736, 189720, 196860, 203422, 206703, 209405, 215388, 221340, 229670, 236232, 239320, 243180, 251286, 265608, 269235, 275604, 295290, 305133, 332010, 335048, 344505, 358980, 376929, 393720, 406844, 413406, 418810, 430776, 442680, 459340, 486360, 502572, 508555, 538470, 551208, 590580, 610266, 628215, 664020, 689010, 711977, 717960, 753858, 813688, 826812, 837620, 915399, 918680, 1005144, 1017110, 1033515, 1076940, 1181160, 1220532, 1256430, 1328040, 1378020, 1423954, 1507716, 1525665, 1653624, 1675240, 1830798, 1884645, 2034220, 2067030, 2135931, 2153880, 2441064, 2512860, 2756040, 2847908, 3015432, 3051330, 3559885, 3661596, 3769290, 4068440, 4134060, 4271862, 4576995, 5025720, 5695816, 6102660, 6407793, 7119770, 7323192, 7538580, 8268120, 8543724, 9153990, 10679655, 12205320, 12815586, 14239540, 15077160, 17087448, 18307980, 21359310, 25631172, 28479080, 32038965, 36615960, 42718620, 51262344, 64077930, 85437240, 128155860, 256311720]

約数ペア:

[(1, 256311720), (2, 128155860), (3, 85437240), (4, 64077930), (5, 51262344), (6, 42718620), (7, 36615960), (8, 32038965), (9, 28479080), (10, 25631172), (12, 21359310), (14, 18307980), (15, 17087448), (17, 15077160), (18, 14239540), (20, 12815586), (21, 12205320), (24, 10679655), (28, 9153990), (30, 8543724), (31, 8268120), (34, 7538580), (35, 7323192), (36, 7119770), (40, 6407793), (42, 6102660), (45, 5695816), (51, 5025720), (56, 4576995), (60, 4271862), (62, 4134060), (63, 4068440), (68, 3769290), (70, 3661596), (72, 3559885), (84, 3051330), (85, 3015432), (90, 2847908), (93, 2756040), (102, 2512860), (105, 2441064), (119, 2153880), (120, 2135931), (124, 2067030), (126, 2034220), (136, 1884645), (140, 1830798), (153, 1675240), (155, 1653624), (168, 1525665), (170, 1507716), (180, 1423954), (186, 1378020), (193, 1328040), (204, 1256430), (210, 1220532), (217, 1181160), (238, 1076940), (248, 1033515), (252, 1017110), (255, 1005144), (279, 918680), (280, 915399), (306, 837620), (310, 826812), (315, 813688), (340, 753858), (357, 717960), (360, 711977), (372, 689010), (386, 664020), (408, 628215), (420, 610266), (434, 590580), (465, 551208), (476, 538470), (504, 508555), (510, 502572), (527, 486360), (558, 459340), (579, 442680), (595, 430776), (612, 418810), (620, 413406), (630, 406844), (651, 393720), (680, 376929), (714, 358980), (744, 344505), (765, 335048), (772, 332010), (840, 305133), (868, 295290), (930, 275604), (952, 269235), (965, 265608), (1020, 251286), (1054, 243180), (1071, 239320), (1085, 236232), (1116, 229670), (1158, 221340), (1190, 215388), (1224, 209405), (1240, 206703), (1260, 203422), (1302, 196860), (1351, 189720), (1395, 183736), (1428, 179490), (1530, 167524), (1544, 166005), (1581, 162120), (1736, 147645), (1737, 147560), (1785, 143592), (1860, 137802), (1930, 132804), (1953, 131240), (2040, 125643), (2108, 121590), (2142, 119660), (2170, 118116), (2232, 114835), (2316, 110670), (2380, 107694), (2520, 101711), (2604, 98430), (2635, 97272), (2702, 94860), (2790, 91868), (2856, 89745), (2895, 88536), (3060, 83762), (3162, 81060), (3255, 78744), (3281, 78120), (3474, 73780), (3570, 71796), (3689, 69480), (3720, 68901), (3860, 66402), (3906, 65620), (4053, 63240), (4216, 60795), (4284, 59830), (4340, 59058), (4632, 55335), (4743, 54040), (4760, 53847), (5208, 49215), (5270, 48636), (5355, 47864), (5404, 47430), (5580, 45934), (5790, 44268), (5983, 42840), (6120, 41881), (6324, 40530), (6510, 39372), (6562, 39060), (6755, 37944), (6948, 36890), (7140, 35898), (7378, 34740), (7720, 33201), (7812, 32810), (7905, 32424), (8106, 31620), (8568, 29915), (8680, 29529), (8685, 29512), (9486, 27020), (9765, 26248), (9843, 26040), (10540, 24318), (10710, 23932), (10808, 23715), (11067, 23160), (11160, 22967), (11580, 22134), (11966, 21420), (12159, 21080), (12648, 20265), (13020, 19686), (13124, 19530), (13510, 18972), (13896, 18445), (14280, 17949), (14756, 17370), (15624, 16405), (15810, 16212)]