255961917

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{233}}^1$

素因数の和:355

約数の個数: 64

約数和(自身を含む): 417830400

約数和(自身を除く): 161868483

約数列:

[1, 3, 9, 23, 27, 29, 61, 69, 87, 183, 207, 233, 261, 549, 621, 667, 699, 783, 1403, 1647, 1769, 2001, 2097, 4209, 5307, 5359, 6003, 6291, 6757, 12627, 14213, 15921, 16077, 18009, 20271, 37881, 40687, 42639, 47763, 48231, 60813, 122061, 127917, 144693, 155411, 182439, 326899, 366183, 383751, 412177, 466233, 980697, 1098549, 1236531, 1398699, 2942091, 3709593, 4196097, 8826273, 9480071, 11128779, 28440213, 85320639, 255961917]

約数ペア:

[(1, 255961917), (3, 85320639), (9, 28440213), (23, 11128779), (27, 9480071), (29, 8826273), (61, 4196097), (69, 3709593), (87, 2942091), (183, 1398699), (207, 1236531), (233, 1098549), (261, 980697), (549, 466233), (621, 412177), (667, 383751), (699, 366183), (783, 326899), (1403, 182439), (1647, 155411), (1769, 144693), (2001, 127917), (2097, 122061), (4209, 60813), (5307, 48231), (5359, 47763), (6003, 42639), (6291, 40687), (6757, 37881), (12627, 20271), (14213, 18009), (15921, 16077)]