256805640

素因数分解:

$2^3\times 3^4\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1$

素因数の和:123

約数の個数: 480

約数和(自身を含む): 1084121280

約数和(自身を除く): 827315640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 18, 20, 21, 24, 26, 27, 28, 30, 35, 36, 39, 40, 42, 45, 52, 54, 56, 60, 63, 65, 67, 70, 72, 78, 81, 84, 90, 91, 104, 105, 108, 117, 120, 126, 130, 134, 135, 140, 156, 162, 168, 169, 180, 182, 189, 195, 201, 210, 216, 234, 252, 260, 268, 270, 273, 280, 312, 315, 324, 335, 338, 351, 360, 364, 378, 390, 402, 405, 420, 455, 468, 469, 504, 507, 520, 536, 540, 546, 567, 585, 603, 630, 648, 670, 676, 702, 728, 756, 780, 804, 810, 819, 840, 845, 871, 910, 936, 938, 945, 1005, 1014, 1053, 1080, 1092, 1134, 1170, 1183, 1206, 1260, 1340, 1352, 1365, 1404, 1407, 1512, 1521, 1560, 1608, 1620, 1638, 1690, 1742, 1755, 1809, 1820, 1876, 1890, 2010, 2028, 2106, 2184, 2268, 2340, 2345, 2366, 2412, 2457, 2520, 2535, 2613, 2680, 2730, 2808, 2814, 2835, 3015, 3042, 3240, 3276, 3380, 3484, 3510, 3549, 3618, 3640, 3752, 3780, 4020, 4056, 4095, 4212, 4221, 4355, 4536, 4563, 4680, 4690, 4732, 4824, 4914, 5070, 5226, 5265, 5427, 5460, 5628, 5670, 5915, 6030, 6084, 6097, 6552, 6760, 6968, 7020, 7035, 7098, 7236, 7371, 7560, 7605, 7839, 8040, 8190, 8424, 8442, 8710, 9045, 9126, 9380, 9464, 9828, 10140, 10452, 10530, 10647, 10854, 10920, 11256, 11323, 11340, 11830, 12060, 12168, 12194, 12285, 12663, 13065, 13689, 14040, 14070, 14196, 14472, 14742, 15210, 15678, 16380, 16884, 17420, 17745, 18090, 18252, 18291, 18760, 19656, 20280, 20904, 21060, 21105, 21294, 21708, 22646, 22680, 22815, 23517, 23660, 24120, 24388, 24570, 25326, 26130, 27135, 27378, 28140, 28392, 29484, 30420, 30485, 31356, 31941, 32760, 33768, 33969, 34840, 35490, 36180, 36504, 36582, 36855, 37989, 39195, 42120, 42210, 42588, 43416, 45292, 45630, 47034, 47320, 48776, 49140, 50652, 52260, 53235, 54270, 54756, 54873, 56280, 56615, 58968, 60840, 60970, 62712, 63315, 63882, 67938, 68445, 70551, 70980, 72360, 73164, 73710, 75978, 78390, 79261, 84420, 85176, 90584, 91260, 91455, 94068, 95823, 98280, 101304, 101907, 104520, 106470, 108540, 109512, 109746, 113230, 117585, 121940, 126630, 127764, 135876, 136890, 141102, 141960, 146328, 147420, 151956, 156780, 158522, 159705, 164619, 168840, 169845, 182520, 182910, 188136, 189945, 191646, 203814, 212940, 217080, 219492, 226460, 235170, 237783, 243880, 253260, 255528, 271752, 273780, 274365, 282204, 294840, 303912, 305721, 313560, 317044, 319410, 329238, 339690, 352755, 365820, 379890, 383292, 396305, 407628, 425880, 438984, 452920, 470340, 475566, 479115, 493857, 506520, 509535, 547560, 548730, 564408, 611442, 634088, 638820, 658476, 679380, 705510, 713349, 731640, 759780, 766584, 792610, 815256, 823095, 917163, 940680, 951132, 958230, 987714, 1019070, 1097460, 1188915, 1222884, 1277640, 1316952, 1358760, 1411020, 1426698, 1519560, 1528605, 1585220, 1646190, 1834326, 1902264, 1916460, 1975428, 2038140, 2140047, 2194920, 2377830, 2445768, 2469285, 2822040, 2853396, 3057210, 3170440, 3292380, 3566745, 3668652, 3832920, 3950856, 4076280, 4280094, 4585815, 4755660, 4938570, 5706792, 6114420, 6420141, 6584760, 7133490, 7337304, 8560188, 9171630, 9511320, 9877140, 10700235, 12228840, 12840282, 14266980, 17120376, 18343260, 19754280, 21400470, 25680564, 28533960, 32100705, 36686520, 42800940, 51361128, 64201410, 85601880, 128402820, 256805640]

約数ペア:

[(1, 256805640), (2, 128402820), (3, 85601880), (4, 64201410), (5, 51361128), (6, 42800940), (7, 36686520), (8, 32100705), (9, 28533960), (10, 25680564), (12, 21400470), (13, 19754280), (14, 18343260), (15, 17120376), (18, 14266980), (20, 12840282), (21, 12228840), (24, 10700235), (26, 9877140), (27, 9511320), (28, 9171630), (30, 8560188), (35, 7337304), (36, 7133490), (39, 6584760), (40, 6420141), (42, 6114420), (45, 5706792), (52, 4938570), (54, 4755660), (56, 4585815), (60, 4280094), (63, 4076280), (65, 3950856), (67, 3832920), (70, 3668652), (72, 3566745), (78, 3292380), (81, 3170440), (84, 3057210), (90, 2853396), (91, 2822040), (104, 2469285), (105, 2445768), (108, 2377830), (117, 2194920), (120, 2140047), (126, 2038140), (130, 1975428), (134, 1916460), (135, 1902264), (140, 1834326), (156, 1646190), (162, 1585220), (168, 1528605), (169, 1519560), (180, 1426698), (182, 1411020), (189, 1358760), (195, 1316952), (201, 1277640), (210, 1222884), (216, 1188915), (234, 1097460), (252, 1019070), (260, 987714), (268, 958230), (270, 951132), (273, 940680), (280, 917163), (312, 823095), (315, 815256), (324, 792610), (335, 766584), (338, 759780), (351, 731640), (360, 713349), (364, 705510), (378, 679380), (390, 658476), (402, 638820), (405, 634088), (420, 611442), (455, 564408), (468, 548730), (469, 547560), (504, 509535), (507, 506520), (520, 493857), (536, 479115), (540, 475566), (546, 470340), (567, 452920), (585, 438984), (603, 425880), (630, 407628), (648, 396305), (670, 383292), (676, 379890), (702, 365820), (728, 352755), (756, 339690), (780, 329238), (804, 319410), (810, 317044), (819, 313560), (840, 305721), (845, 303912), (871, 294840), (910, 282204), (936, 274365), (938, 273780), (945, 271752), (1005, 255528), (1014, 253260), (1053, 243880), (1080, 237783), (1092, 235170), (1134, 226460), (1170, 219492), (1183, 217080), (1206, 212940), (1260, 203814), (1340, 191646), (1352, 189945), (1365, 188136), (1404, 182910), (1407, 182520), (1512, 169845), (1521, 168840), (1560, 164619), (1608, 159705), (1620, 158522), (1638, 156780), (1690, 151956), (1742, 147420), (1755, 146328), (1809, 141960), (1820, 141102), (1876, 136890), (1890, 135876), (2010, 127764), (2028, 126630), (2106, 121940), (2184, 117585), (2268, 113230), (2340, 109746), (2345, 109512), (2366, 108540), (2412, 106470), (2457, 104520), (2520, 101907), (2535, 101304), (2613, 98280), (2680, 95823), (2730, 94068), (2808, 91455), (2814, 91260), (2835, 90584), (3015, 85176), (3042, 84420), (3240, 79261), (3276, 78390), (3380, 75978), (3484, 73710), (3510, 73164), (3549, 72360), (3618, 70980), (3640, 70551), (3752, 68445), (3780, 67938), (4020, 63882), (4056, 63315), (4095, 62712), (4212, 60970), (4221, 60840), (4355, 58968), (4536, 56615), (4563, 56280), (4680, 54873), (4690, 54756), (4732, 54270), (4824, 53235), (4914, 52260), (5070, 50652), (5226, 49140), (5265, 48776), (5427, 47320), (5460, 47034), (5628, 45630), (5670, 45292), (5915, 43416), (6030, 42588), (6084, 42210), (6097, 42120), (6552, 39195), (6760, 37989), (6968, 36855), (7020, 36582), (7035, 36504), (7098, 36180), (7236, 35490), (7371, 34840), (7560, 33969), (7605, 33768), (7839, 32760), (8040, 31941), (8190, 31356), (8424, 30485), (8442, 30420), (8710, 29484), (9045, 28392), (9126, 28140), (9380, 27378), (9464, 27135), (9828, 26130), (10140, 25326), (10452, 24570), (10530, 24388), (10647, 24120), (10854, 23660), (10920, 23517), (11256, 22815), (11323, 22680), (11340, 22646), (11830, 21708), (12060, 21294), (12168, 21105), (12194, 21060), (12285, 20904), (12663, 20280), (13065, 19656), (13689, 18760), (14040, 18291), (14070, 18252), (14196, 18090), (14472, 17745), (14742, 17420), (15210, 16884), (15678, 16380)]