256731888

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{239}}^1$

素因数の和:419

約数の個数: 160

約数和(自身を含む): 799948800

約数和(自身を除く): 543216912

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 23, 24, 28, 42, 46, 48, 56, 69, 84, 92, 112, 138, 139, 161, 168, 184, 239, 276, 278, 322, 336, 368, 417, 478, 483, 552, 556, 644, 717, 834, 956, 966, 973, 1104, 1112, 1288, 1434, 1668, 1673, 1912, 1932, 1946, 2224, 2576, 2868, 2919, 3197, 3336, 3346, 3824, 3864, 3892, 5019, 5497, 5736, 5838, 6394, 6672, 6692, 7728, 7784, 9591, 10038, 10994, 11472, 11676, 12788, 13384, 15568, 16491, 19182, 20076, 21988, 22379, 23352, 25576, 26768, 32982, 33221, 38364, 38479, 40152, 43976, 44758, 46704, 51152, 65964, 66442, 67137, 76728, 76958, 80304, 87952, 89516, 99663, 115437, 131928, 132884, 134274, 153456, 153916, 179032, 199326, 230874, 232547, 263856, 265768, 268548, 307832, 358064, 398652, 461748, 465094, 531536, 537096, 615664, 697641, 764083, 797304, 923496, 930188, 1074192, 1395282, 1528166, 1594608, 1846992, 1860376, 2292249, 2790564, 3056332, 3720752, 4584498, 5348581, 5581128, 6112664, 9168996, 10697162, 11162256, 12225328, 16045743, 18337992, 21394324, 32091486, 36675984, 42788648, 64182972, 85577296, 128365944, 256731888]

約数ペア:

[(1, 256731888), (2, 128365944), (3, 85577296), (4, 64182972), (6, 42788648), (7, 36675984), (8, 32091486), (12, 21394324), (14, 18337992), (16, 16045743), (21, 12225328), (23, 11162256), (24, 10697162), (28, 9168996), (42, 6112664), (46, 5581128), (48, 5348581), (56, 4584498), (69, 3720752), (84, 3056332), (92, 2790564), (112, 2292249), (138, 1860376), (139, 1846992), (161, 1594608), (168, 1528166), (184, 1395282), (239, 1074192), (276, 930188), (278, 923496), (322, 797304), (336, 764083), (368, 697641), (417, 615664), (478, 537096), (483, 531536), (552, 465094), (556, 461748), (644, 398652), (717, 358064), (834, 307832), (956, 268548), (966, 265768), (973, 263856), (1104, 232547), (1112, 230874), (1288, 199326), (1434, 179032), (1668, 153916), (1673, 153456), (1912, 134274), (1932, 132884), (1946, 131928), (2224, 115437), (2576, 99663), (2868, 89516), (2919, 87952), (3197, 80304), (3336, 76958), (3346, 76728), (3824, 67137), (3864, 66442), (3892, 65964), (5019, 51152), (5497, 46704), (5736, 44758), (5838, 43976), (6394, 40152), (6672, 38479), (6692, 38364), (7728, 33221), (7784, 32982), (9591, 26768), (10038, 25576), (10994, 23352), (11472, 22379), (11676, 21988), (12788, 20076), (13384, 19182), (15568, 16491)]