721168128

素因数分解:

$2^8\times 3^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{439}}^1$

素因数の和:515

約数の個数: 216

約数和(自身を含む): 2244802560

約数和(自身を除く): 1523634432

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 23, 24, 31, 32, 36, 46, 48, 62, 64, 69, 72, 92, 93, 96, 124, 128, 138, 144, 184, 186, 192, 207, 248, 256, 276, 279, 288, 368, 372, 384, 414, 439, 496, 552, 558, 576, 713, 736, 744, 768, 828, 878, 992, 1104, 1116, 1152, 1317, 1426, 1472, 1488, 1656, 1756, 1984, 2139, 2208, 2232, 2304, 2634, 2852, 2944, 2976, 3312, 3512, 3951, 3968, 4278, 4416, 4464, 5268, 5704, 5888, 5952, 6417, 6624, 7024, 7902, 7936, 8556, 8832, 8928, 10097, 10536, 11408, 11904, 12834, 13248, 13609, 14048, 15804, 17112, 17664, 17856, 20194, 21072, 22816, 23808, 25668, 26496, 27218, 28096, 30291, 31608, 34224, 35712, 40388, 40827, 42144, 45632, 51336, 52992, 54436, 56192, 60582, 63216, 68448, 71424, 80776, 81654, 84288, 90873, 91264, 102672, 108872, 112384, 121164, 122481, 126432, 136896, 161552, 163308, 168576, 181746, 182528, 205344, 217744, 242328, 244962, 252864, 273792, 313007, 323104, 326616, 337152, 363492, 410688, 435488, 484656, 489924, 505728, 547584, 626014, 646208, 653232, 726984, 821376, 870976, 939021, 969312, 979848, 1011456, 1252028, 1292416, 1306464, 1453968, 1642752, 1741952, 1878042, 1938624, 1959696, 2504056, 2584832, 2612928, 2817063, 2907936, 3483904, 3756084, 3877248, 3919392, 5008112, 5225856, 5634126, 5815872, 7512168, 7754496, 7838784, 10016224, 10451712, 11268252, 11631744, 15024336, 15677568, 20032448, 22536504, 23263488, 30048672, 31355136, 40064896, 45073008, 60097344, 80129792, 90146016, 120194688, 180292032, 240389376, 360584064, 721168128]

約数ペア:

[(1, 721168128), (2, 360584064), (3, 240389376), (4, 180292032), (6, 120194688), (8, 90146016), (9, 80129792), (12, 60097344), (16, 45073008), (18, 40064896), (23, 31355136), (24, 30048672), (31, 23263488), (32, 22536504), (36, 20032448), (46, 15677568), (48, 15024336), (62, 11631744), (64, 11268252), (69, 10451712), (72, 10016224), (92, 7838784), (93, 7754496), (96, 7512168), (124, 5815872), (128, 5634126), (138, 5225856), (144, 5008112), (184, 3919392), (186, 3877248), (192, 3756084), (207, 3483904), (248, 2907936), (256, 2817063), (276, 2612928), (279, 2584832), (288, 2504056), (368, 1959696), (372, 1938624), (384, 1878042), (414, 1741952), (439, 1642752), (496, 1453968), (552, 1306464), (558, 1292416), (576, 1252028), (713, 1011456), (736, 979848), (744, 969312), (768, 939021), (828, 870976), (878, 821376), (992, 726984), (1104, 653232), (1116, 646208), (1152, 626014), (1317, 547584), (1426, 505728), (1472, 489924), (1488, 484656), (1656, 435488), (1756, 410688), (1984, 363492), (2139, 337152), (2208, 326616), (2232, 323104), (2304, 313007), (2634, 273792), (2852, 252864), (2944, 244962), (2976, 242328), (3312, 217744), (3512, 205344), (3951, 182528), (3968, 181746), (4278, 168576), (4416, 163308), (4464, 161552), (5268, 136896), (5704, 126432), (5888, 122481), (5952, 121164), (6417, 112384), (6624, 108872), (7024, 102672), (7902, 91264), (7936, 90873), (8556, 84288), (8832, 81654), (8928, 80776), (10097, 71424), (10536, 68448), (11408, 63216), (11904, 60582), (12834, 56192), (13248, 54436), (13609, 52992), (14048, 51336), (15804, 45632), (17112, 42144), (17664, 40827), (17856, 40388), (20194, 35712), (21072, 34224), (22816, 31608), (23808, 30291), (25668, 28096), (26496, 27218)]