81253557

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:85

約数の個数: 128

約数和(自身を含む): 168652800

約数和(自身を除く): 87399243

約数列:

[1, 3, 7, 9, 11, 17, 19, 21, 27, 33, 51, 57, 63, 77, 99, 119, 121, 133, 153, 171, 187, 189, 209, 231, 297, 323, 357, 363, 399, 459, 513, 561, 627, 693, 847, 969, 1071, 1089, 1197, 1309, 1331, 1463, 1683, 1881, 2057, 2079, 2261, 2299, 2541, 2907, 3213, 3267, 3553, 3591, 3927, 3993, 4389, 5049, 5643, 6171, 6783, 6897, 7623, 8721, 9317, 10659, 11781, 11979, 13167, 14399, 16093, 18513, 20349, 20691, 22627, 22869, 24871, 25289, 27951, 31977, 35343, 35937, 39083, 39501, 43197, 48279, 55539, 61047, 62073, 67881, 74613, 75867, 83853, 95931, 117249, 129591, 144837, 158389, 177023, 203643, 223839, 227601, 251559, 273581, 351747, 388773, 429913, 434511, 475167, 531069, 610929, 671517, 682803, 820743, 1055241, 1289739, 1425501, 1593207, 2462229, 3009391, 3869217, 4276503, 4779621, 7386687, 9028173, 11607651, 27084519, 81253557]

約数ペア:

[(1, 81253557), (3, 27084519), (7, 11607651), (9, 9028173), (11, 7386687), (17, 4779621), (19, 4276503), (21, 3869217), (27, 3009391), (33, 2462229), (51, 1593207), (57, 1425501), (63, 1289739), (77, 1055241), (99, 820743), (119, 682803), (121, 671517), (133, 610929), (153, 531069), (171, 475167), (187, 434511), (189, 429913), (209, 388773), (231, 351747), (297, 273581), (323, 251559), (357, 227601), (363, 223839), (399, 203643), (459, 177023), (513, 158389), (561, 144837), (627, 129591), (693, 117249), (847, 95931), (969, 83853), (1071, 75867), (1089, 74613), (1197, 67881), (1309, 62073), (1331, 61047), (1463, 55539), (1683, 48279), (1881, 43197), (2057, 39501), (2079, 39083), (2261, 35937), (2299, 35343), (2541, 31977), (2907, 27951), (3213, 25289), (3267, 24871), (3553, 22869), (3591, 22627), (3927, 20691), (3993, 20349), (4389, 18513), (5049, 16093), (5643, 14399), (6171, 13167), (6783, 11979), (6897, 11781), (7623, 10659), (8721, 9317)]