720681808

素因数分解:

$2^4\times 7^2\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:222

約数の個数: 180

約数和(自身を含む): 1827445536

約数和(自身を除く): 1106763728

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 49, 56, 71, 77, 88, 98, 107, 112, 121, 142, 154, 176, 196, 214, 242, 284, 308, 392, 428, 484, 497, 539, 568, 616, 749, 781, 784, 847, 856, 968, 994, 1078, 1136, 1177, 1232, 1498, 1562, 1694, 1712, 1936, 1988, 2156, 2354, 2996, 3124, 3388, 3479, 3976, 4312, 4708, 5243, 5467, 5929, 5992, 6248, 6776, 6958, 7597, 7952, 8239, 8591, 8624, 9416, 10486, 10934, 11858, 11984, 12496, 12947, 13552, 13916, 15194, 16478, 17182, 18832, 20972, 21868, 23716, 25894, 27832, 30388, 32956, 34364, 38269, 41944, 43736, 47432, 51788, 53179, 55664, 57673, 60137, 60776, 65912, 68728, 76538, 83567, 83888, 87472, 90629, 94864, 103576, 106358, 115346, 120274, 121552, 131824, 137456, 153076, 167134, 181258, 207152, 212716, 230692, 240548, 306152, 334268, 362516, 372253, 420959, 425432, 461384, 481096, 584969, 612304, 634403, 668536, 725032, 744506, 841918, 850864, 919237, 922768, 962192, 1169938, 1268806, 1337072, 1450064, 1489012, 1683836, 1838474, 2339876, 2537612, 2978024, 3367672, 3676948, 4094783, 4679752, 5075224, 5956048, 6434659, 6735344, 7353896, 8189566, 9359504, 10150448, 12869318, 14707792, 16379132, 25738636, 32758264, 45042613, 51477272, 65516528, 90085226, 102954544, 180170452, 360340904, 720681808]

約数ペア:

[(1, 720681808), (2, 360340904), (4, 180170452), (7, 102954544), (8, 90085226), (11, 65516528), (14, 51477272), (16, 45042613), (22, 32758264), (28, 25738636), (44, 16379132), (49, 14707792), (56, 12869318), (71, 10150448), (77, 9359504), (88, 8189566), (98, 7353896), (107, 6735344), (112, 6434659), (121, 5956048), (142, 5075224), (154, 4679752), (176, 4094783), (196, 3676948), (214, 3367672), (242, 2978024), (284, 2537612), (308, 2339876), (392, 1838474), (428, 1683836), (484, 1489012), (497, 1450064), (539, 1337072), (568, 1268806), (616, 1169938), (749, 962192), (781, 922768), (784, 919237), (847, 850864), (856, 841918), (968, 744506), (994, 725032), (1078, 668536), (1136, 634403), (1177, 612304), (1232, 584969), (1498, 481096), (1562, 461384), (1694, 425432), (1712, 420959), (1936, 372253), (1988, 362516), (2156, 334268), (2354, 306152), (2996, 240548), (3124, 230692), (3388, 212716), (3479, 207152), (3976, 181258), (4312, 167134), (4708, 153076), (5243, 137456), (5467, 131824), (5929, 121552), (5992, 120274), (6248, 115346), (6776, 106358), (6958, 103576), (7597, 94864), (7952, 90629), (8239, 87472), (8591, 83888), (8624, 83567), (9416, 76538), (10486, 68728), (10934, 65912), (11858, 60776), (11984, 60137), (12496, 57673), (12947, 55664), (13552, 53179), (13916, 51788), (15194, 47432), (16478, 43736), (17182, 41944), (18832, 38269), (20972, 34364), (21868, 32956), (23716, 30388), (25894, 27832)]