81355563

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{37}}^2\times {\mathrm{71}}^1$

素因数の和:185

約数の個数: 48

約数和(自身を含む): 129669120

約数和(自身を除く): 48313557

約数列:

[1, 3, 9, 27, 31, 37, 71, 93, 111, 213, 279, 333, 639, 837, 999, 1147, 1369, 1917, 2201, 2627, 3441, 4107, 6603, 7881, 10323, 12321, 19809, 23643, 30969, 36963, 42439, 59427, 70929, 81437, 97199, 127317, 244311, 291597, 381951, 732933, 874791, 1145853, 2198799, 2624373, 3013169, 9039507, 27118521, 81355563]

約数ペア:

[(1, 81355563), (3, 27118521), (9, 9039507), (27, 3013169), (31, 2624373), (37, 2198799), (71, 1145853), (93, 874791), (111, 732933), (213, 381951), (279, 291597), (333, 244311), (639, 127317), (837, 97199), (999, 81437), (1147, 70929), (1369, 59427), (1917, 42439), (2201, 36963), (2627, 30969), (3441, 23643), (4107, 19809), (6603, 12321), (7881, 10323)]