720215808

素因数分解:

$2^8\times 3^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{179}}^1$

素因数の和:255

約数の個数: 216

約数和(自身を含む): 2154539520

約数和(自身を除く): 1434323712

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 31, 32, 39, 48, 52, 62, 64, 78, 93, 96, 104, 124, 128, 156, 169, 179, 186, 192, 208, 248, 256, 312, 338, 358, 372, 384, 403, 416, 496, 507, 537, 624, 676, 716, 744, 768, 806, 832, 992, 1014, 1074, 1209, 1248, 1352, 1432, 1488, 1612, 1664, 1984, 2028, 2148, 2327, 2418, 2496, 2704, 2864, 2976, 3224, 3328, 3968, 4056, 4296, 4654, 4836, 4992, 5239, 5408, 5549, 5728, 5952, 6448, 6981, 7936, 8112, 8592, 9308, 9672, 9984, 10478, 10816, 11098, 11456, 11904, 12896, 13962, 15717, 16224, 16647, 17184, 18616, 19344, 20956, 21632, 22196, 22912, 23808, 25792, 27924, 30251, 31434, 32448, 33294, 34368, 37232, 38688, 41912, 43264, 44392, 45824, 51584, 55848, 60502, 62868, 64896, 66588, 68736, 72137, 74464, 77376, 83824, 88784, 90753, 103168, 111696, 121004, 125736, 129792, 133176, 137472, 144274, 148928, 154752, 167648, 177568, 181506, 216411, 223392, 242008, 251472, 266352, 288548, 297856, 309504, 335296, 355136, 363012, 432822, 446784, 484016, 502944, 532704, 577096, 595712, 670592, 710272, 726024, 865644, 893568, 937781, 968032, 1005888, 1065408, 1154192, 1341184, 1420544, 1452048, 1731288, 1787136, 1875562, 1936064, 2011776, 2130816, 2308384, 2813343, 2904096, 3462576, 3751124, 3872128, 4023552, 4261632, 4616768, 5626686, 5808192, 6925152, 7502248, 7744256, 9233536, 11253372, 11616384, 13850304, 15004496, 18467072, 22506744, 23232768, 27700608, 30008992, 45013488, 55401216, 60017984, 90026976, 120035968, 180053952, 240071936, 360107904, 720215808]

約数ペア:

[(1, 720215808), (2, 360107904), (3, 240071936), (4, 180053952), (6, 120035968), (8, 90026976), (12, 60017984), (13, 55401216), (16, 45013488), (24, 30008992), (26, 27700608), (31, 23232768), (32, 22506744), (39, 18467072), (48, 15004496), (52, 13850304), (62, 11616384), (64, 11253372), (78, 9233536), (93, 7744256), (96, 7502248), (104, 6925152), (124, 5808192), (128, 5626686), (156, 4616768), (169, 4261632), (179, 4023552), (186, 3872128), (192, 3751124), (208, 3462576), (248, 2904096), (256, 2813343), (312, 2308384), (338, 2130816), (358, 2011776), (372, 1936064), (384, 1875562), (403, 1787136), (416, 1731288), (496, 1452048), (507, 1420544), (537, 1341184), (624, 1154192), (676, 1065408), (716, 1005888), (744, 968032), (768, 937781), (806, 893568), (832, 865644), (992, 726024), (1014, 710272), (1074, 670592), (1209, 595712), (1248, 577096), (1352, 532704), (1432, 502944), (1488, 484016), (1612, 446784), (1664, 432822), (1984, 363012), (2028, 355136), (2148, 335296), (2327, 309504), (2418, 297856), (2496, 288548), (2704, 266352), (2864, 251472), (2976, 242008), (3224, 223392), (3328, 216411), (3968, 181506), (4056, 177568), (4296, 167648), (4654, 154752), (4836, 148928), (4992, 144274), (5239, 137472), (5408, 133176), (5549, 129792), (5728, 125736), (5952, 121004), (6448, 111696), (6981, 103168), (7936, 90753), (8112, 88784), (8592, 83824), (9308, 77376), (9672, 74464), (9984, 72137), (10478, 68736), (10816, 66588), (11098, 64896), (11456, 62868), (11904, 60502), (12896, 55848), (13962, 51584), (15717, 45824), (16224, 44392), (16647, 43264), (17184, 41912), (18616, 38688), (19344, 37232), (20956, 34368), (21632, 33294), (22196, 32448), (22912, 31434), (23808, 30251), (25792, 27924)]