256511856

素因数分解:

$2^4\times 3^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{211}}^1$

素因数の和:315

約数の個数: 160

約数和(自身を含む): 740270080

約数和(自身を除く): 483758224

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 19, 24, 31, 38, 43, 48, 57, 62, 76, 86, 93, 114, 124, 129, 152, 172, 186, 211, 228, 248, 258, 304, 344, 372, 422, 456, 496, 516, 589, 633, 688, 744, 817, 844, 912, 1032, 1178, 1266, 1333, 1488, 1634, 1688, 1767, 2064, 2356, 2451, 2532, 2666, 3268, 3376, 3534, 3999, 4009, 4712, 4902, 5064, 5332, 6536, 6541, 7068, 7998, 8018, 9073, 9424, 9804, 10128, 10664, 12027, 13072, 13082, 14136, 15996, 16036, 18146, 19608, 19623, 21328, 24054, 25327, 26164, 27219, 28272, 31992, 32072, 36292, 39216, 39246, 48108, 50654, 52328, 54438, 63984, 64144, 72584, 75981, 78492, 96216, 101308, 104656, 108876, 124279, 145168, 151962, 156984, 172387, 192432, 202616, 217752, 248558, 281263, 303924, 313968, 344774, 372837, 405232, 435504, 497116, 517161, 562526, 607848, 689548, 745674, 843789, 994232, 1034322, 1125052, 1215696, 1379096, 1491348, 1687578, 1988464, 2068644, 2250104, 2758192, 2982696, 3375156, 4137288, 4500208, 5343997, 5965392, 6750312, 8274576, 10687994, 13500624, 16031991, 21375988, 32063982, 42751976, 64127964, 85503952, 128255928, 256511856]

約数ペア:

[(1, 256511856), (2, 128255928), (3, 85503952), (4, 64127964), (6, 42751976), (8, 32063982), (12, 21375988), (16, 16031991), (19, 13500624), (24, 10687994), (31, 8274576), (38, 6750312), (43, 5965392), (48, 5343997), (57, 4500208), (62, 4137288), (76, 3375156), (86, 2982696), (93, 2758192), (114, 2250104), (124, 2068644), (129, 1988464), (152, 1687578), (172, 1491348), (186, 1379096), (211, 1215696), (228, 1125052), (248, 1034322), (258, 994232), (304, 843789), (344, 745674), (372, 689548), (422, 607848), (456, 562526), (496, 517161), (516, 497116), (589, 435504), (633, 405232), (688, 372837), (744, 344774), (817, 313968), (844, 303924), (912, 281263), (1032, 248558), (1178, 217752), (1266, 202616), (1333, 192432), (1488, 172387), (1634, 156984), (1688, 151962), (1767, 145168), (2064, 124279), (2356, 108876), (2451, 104656), (2532, 101308), (2666, 96216), (3268, 78492), (3376, 75981), (3534, 72584), (3999, 64144), (4009, 63984), (4712, 54438), (4902, 52328), (5064, 50654), (5332, 48108), (6536, 39246), (6541, 39216), (7068, 36292), (7998, 32072), (8018, 31992), (9073, 28272), (9424, 27219), (9804, 26164), (10128, 25327), (10664, 24054), (12027, 21328), (13072, 19623), (13082, 19608), (14136, 18146), (15996, 16036)]