81991224

素因数分解:

$2^3\times 3^3\times 7^1\times {\mathrm{211}}^1\times {\mathrm{257}}^1$

素因数の和:490

約数の個数: 128

約数和(自身を含む): 262540800

約数和(自身を除く): 180549576

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 54, 56, 63, 72, 84, 108, 126, 168, 189, 211, 216, 252, 257, 378, 422, 504, 514, 633, 756, 771, 844, 1028, 1266, 1477, 1512, 1542, 1688, 1799, 1899, 2056, 2313, 2532, 2954, 3084, 3598, 3798, 4431, 4626, 5064, 5397, 5697, 5908, 6168, 6939, 7196, 7596, 8862, 9252, 10794, 11394, 11816, 13293, 13878, 14392, 15192, 16191, 17724, 18504, 21588, 22788, 26586, 27756, 32382, 35448, 39879, 43176, 45576, 48573, 53172, 54227, 55512, 64764, 79758, 97146, 106344, 108454, 129528, 159516, 162681, 194292, 216908, 319032, 325362, 379589, 388584, 433816, 488043, 650724, 759178, 976086, 1138767, 1301448, 1464129, 1518356, 1952172, 2277534, 2928258, 3036712, 3416301, 3904344, 4555068, 5856516, 6832602, 9110136, 10248903, 11713032, 13665204, 20497806, 27330408, 40995612, 81991224]

約数ペア:

[(1, 81991224), (2, 40995612), (3, 27330408), (4, 20497806), (6, 13665204), (7, 11713032), (8, 10248903), (9, 9110136), (12, 6832602), (14, 5856516), (18, 4555068), (21, 3904344), (24, 3416301), (27, 3036712), (28, 2928258), (36, 2277534), (42, 1952172), (54, 1518356), (56, 1464129), (63, 1301448), (72, 1138767), (84, 976086), (108, 759178), (126, 650724), (168, 488043), (189, 433816), (211, 388584), (216, 379589), (252, 325362), (257, 319032), (378, 216908), (422, 194292), (504, 162681), (514, 159516), (633, 129528), (756, 108454), (771, 106344), (844, 97146), (1028, 79758), (1266, 64764), (1477, 55512), (1512, 54227), (1542, 53172), (1688, 48573), (1799, 45576), (1899, 43176), (2056, 39879), (2313, 35448), (2532, 32382), (2954, 27756), (3084, 26586), (3598, 22788), (3798, 21588), (4431, 18504), (4626, 17724), (5064, 16191), (5397, 15192), (5697, 14392), (5908, 13878), (6168, 13293), (6939, 11816), (7196, 11394), (7596, 10794), (8862, 9252)]