257268984

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{479}}^1$

素因数の和:657

約数の個数: 128

約数和(自身を含む): 774144000

約数和(自身を除く): 516875016

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 23, 24, 28, 42, 46, 56, 69, 84, 92, 138, 139, 161, 168, 184, 276, 278, 322, 417, 479, 483, 552, 556, 644, 834, 958, 966, 973, 1112, 1288, 1437, 1668, 1916, 1932, 1946, 2874, 2919, 3197, 3336, 3353, 3832, 3864, 3892, 5748, 5838, 6394, 6706, 7784, 9591, 10059, 11017, 11496, 11676, 12788, 13412, 19182, 20118, 22034, 22379, 23352, 25576, 26824, 33051, 38364, 40236, 44068, 44758, 66102, 66581, 67137, 76728, 77119, 80472, 88136, 89516, 132204, 133162, 134274, 154238, 179032, 199743, 231357, 264408, 266324, 268548, 308476, 399486, 462714, 466067, 532648, 537096, 616952, 798972, 925428, 932134, 1398201, 1531363, 1597944, 1850856, 1864268, 2796402, 3062726, 3728536, 4594089, 5592804, 6125452, 9188178, 10719541, 11185608, 12250904, 18376356, 21439082, 32158623, 36752712, 42878164, 64317246, 85756328, 128634492, 257268984]

約数ペア:

[(1, 257268984), (2, 128634492), (3, 85756328), (4, 64317246), (6, 42878164), (7, 36752712), (8, 32158623), (12, 21439082), (14, 18376356), (21, 12250904), (23, 11185608), (24, 10719541), (28, 9188178), (42, 6125452), (46, 5592804), (56, 4594089), (69, 3728536), (84, 3062726), (92, 2796402), (138, 1864268), (139, 1850856), (161, 1597944), (168, 1531363), (184, 1398201), (276, 932134), (278, 925428), (322, 798972), (417, 616952), (479, 537096), (483, 532648), (552, 466067), (556, 462714), (644, 399486), (834, 308476), (958, 268548), (966, 266324), (973, 264408), (1112, 231357), (1288, 199743), (1437, 179032), (1668, 154238), (1916, 134274), (1932, 133162), (1946, 132204), (2874, 89516), (2919, 88136), (3197, 80472), (3336, 77119), (3353, 76728), (3832, 67137), (3864, 66581), (3892, 66102), (5748, 44758), (5838, 44068), (6394, 40236), (6706, 38364), (7784, 33051), (9591, 26824), (10059, 25576), (11017, 23352), (11496, 22379), (11676, 22034), (12788, 20118), (13412, 19182)]