256491963

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{311}}^1$

素因数の和:409

約数の個数: 96

約数和(自身を含む): 490613760

約数和(自身を除く): 234121797

約数列:

[1, 3, 7, 9, 13, 19, 21, 39, 53, 57, 63, 91, 117, 133, 159, 171, 247, 273, 311, 371, 399, 477, 689, 741, 819, 933, 1007, 1113, 1197, 1729, 2067, 2177, 2223, 2799, 3021, 3339, 4043, 4823, 5187, 5909, 6201, 6531, 7049, 9063, 12129, 13091, 14469, 15561, 16483, 17727, 19593, 21147, 28301, 36387, 39273, 41363, 43407, 49449, 53181, 63441, 76817, 84903, 91637, 115381, 117819, 124089, 148347, 214279, 230451, 254709, 274911, 313177, 346143, 372267, 537719, 642837, 691353, 824733, 939531, 1038429, 1499953, 1613157, 1928511, 2192239, 2818593, 4071301, 4499859, 4839471, 6576717, 12213903, 13499577, 19730151, 28499107, 36641709, 85497321, 256491963]

約数ペア:

[(1, 256491963), (3, 85497321), (7, 36641709), (9, 28499107), (13, 19730151), (19, 13499577), (21, 12213903), (39, 6576717), (53, 4839471), (57, 4499859), (63, 4071301), (91, 2818593), (117, 2192239), (133, 1928511), (159, 1613157), (171, 1499953), (247, 1038429), (273, 939531), (311, 824733), (371, 691353), (399, 642837), (477, 537719), (689, 372267), (741, 346143), (819, 313177), (933, 274911), (1007, 254709), (1113, 230451), (1197, 214279), (1729, 148347), (2067, 124089), (2177, 117819), (2223, 115381), (2799, 91637), (3021, 84903), (3339, 76817), (4043, 63441), (4823, 53181), (5187, 49449), (5909, 43407), (6201, 41363), (6531, 39273), (7049, 36387), (9063, 28301), (12129, 21147), (13091, 19593), (14469, 17727), (15561, 16483)]