256195548

素因数分解:

$2^2\times 3^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:174

約数の個数: 240

約数和(自身を含む): 815721984

約数和(自身を除く): 559526436

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 37, 42, 43, 54, 63, 71, 74, 81, 84, 86, 108, 111, 126, 129, 142, 148, 162, 172, 189, 213, 222, 252, 258, 259, 284, 301, 324, 333, 378, 387, 426, 444, 497, 516, 518, 567, 602, 639, 666, 756, 774, 777, 852, 903, 994, 999, 1036, 1134, 1161, 1204, 1278, 1332, 1491, 1548, 1554, 1591, 1806, 1917, 1988, 1998, 2268, 2322, 2331, 2556, 2627, 2709, 2982, 2997, 3053, 3108, 3182, 3483, 3612, 3834, 3996, 4473, 4644, 4662, 4773, 5254, 5418, 5751, 5964, 5994, 6106, 6364, 6966, 6993, 7668, 7881, 8127, 8946, 9159, 9324, 9546, 10508, 10836, 11137, 11502, 11988, 12212, 13419, 13932, 13986, 14319, 15762, 16254, 17892, 18318, 18389, 19092, 20979, 21371, 22274, 23004, 23643, 24381, 26838, 27477, 27972, 28638, 31524, 32508, 33411, 36636, 36778, 40257, 41958, 42742, 42957, 44548, 47286, 48762, 53676, 54954, 55167, 57276, 64113, 66822, 70929, 73556, 80514, 82431, 83916, 85484, 85914, 94572, 97524, 100233, 109908, 110334, 112961, 128226, 128871, 133644, 141858, 161028, 164862, 165501, 171828, 192339, 200466, 212787, 220668, 225922, 247293, 256452, 257742, 283716, 300699, 329724, 331002, 338883, 384678, 400932, 425574, 451844, 494586, 496503, 515484, 577017, 601398, 662004, 677766, 769356, 790727, 851148, 902097, 989172, 993006, 1016649, 1154034, 1202796, 1355532, 1489509, 1581454, 1731051, 1804194, 1986012, 2033298, 2308068, 2372181, 2979018, 3049947, 3162908, 3462102, 3608388, 4066596, 4744362, 5958036, 6099894, 6924204, 7116543, 9149841, 9488724, 12199788, 14233086, 18299682, 21349629, 28466172, 36599364, 42699258, 64048887, 85398516, 128097774, 256195548]

約数ペア:

[(1, 256195548), (2, 128097774), (3, 85398516), (4, 64048887), (6, 42699258), (7, 36599364), (9, 28466172), (12, 21349629), (14, 18299682), (18, 14233086), (21, 12199788), (27, 9488724), (28, 9149841), (36, 7116543), (37, 6924204), (42, 6099894), (43, 5958036), (54, 4744362), (63, 4066596), (71, 3608388), (74, 3462102), (81, 3162908), (84, 3049947), (86, 2979018), (108, 2372181), (111, 2308068), (126, 2033298), (129, 1986012), (142, 1804194), (148, 1731051), (162, 1581454), (172, 1489509), (189, 1355532), (213, 1202796), (222, 1154034), (252, 1016649), (258, 993006), (259, 989172), (284, 902097), (301, 851148), (324, 790727), (333, 769356), (378, 677766), (387, 662004), (426, 601398), (444, 577017), (497, 515484), (516, 496503), (518, 494586), (567, 451844), (602, 425574), (639, 400932), (666, 384678), (756, 338883), (774, 331002), (777, 329724), (852, 300699), (903, 283716), (994, 257742), (999, 256452), (1036, 247293), (1134, 225922), (1161, 220668), (1204, 212787), (1278, 200466), (1332, 192339), (1491, 171828), (1548, 165501), (1554, 164862), (1591, 161028), (1806, 141858), (1917, 133644), (1988, 128871), (1998, 128226), (2268, 112961), (2322, 110334), (2331, 109908), (2556, 100233), (2627, 97524), (2709, 94572), (2982, 85914), (2997, 85484), (3053, 83916), (3108, 82431), (3182, 80514), (3483, 73556), (3612, 70929), (3834, 66822), (3996, 64113), (4473, 57276), (4644, 55167), (4662, 54954), (4773, 53676), (5254, 48762), (5418, 47286), (5751, 44548), (5964, 42957), (5994, 42742), (6106, 41958), (6364, 40257), (6966, 36778), (6993, 36636), (7668, 33411), (7881, 32508), (8127, 31524), (8946, 28638), (9159, 27972), (9324, 27477), (9546, 26838), (10508, 24381), (10836, 23643), (11137, 23004), (11502, 22274), (11988, 21371), (12212, 20979), (13419, 19092), (13932, 18389), (13986, 18318), (14319, 17892), (15762, 16254)]