11721489471

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^2\times {\mathrm{239}}^1$

素因数の和:457

約数の個数: 72

約数和(自身を含む): 18377349120

約数和(自身を除く): 6655859649

約数列:

[1, 3, 9, 23, 47, 69, 71, 141, 207, 213, 239, 423, 639, 717, 1081, 1633, 2151, 3243, 3337, 4899, 5041, 5497, 9729, 10011, 11233, 14697, 15123, 16491, 16969, 30033, 33699, 45369, 49473, 50907, 76751, 101097, 115943, 152721, 230253, 236927, 258359, 347829, 390287, 690759, 710781, 775077, 797543, 1043487, 1170861, 1204799, 2132343, 2325231, 2392629, 3512583, 3614397, 5449321, 7177887, 10843191, 16347963, 18343489, 27710377, 49043889, 55030467, 56625553, 83131131, 165091401, 169876659, 249393393, 509629977, 1302387719, 3907163157, 11721489471]

約数ペア:

[(1, 11721489471), (3, 3907163157), (9, 1302387719), (23, 509629977), (47, 249393393), (69, 169876659), (71, 165091401), (141, 83131131), (207, 56625553), (213, 55030467), (239, 49043889), (423, 27710377), (639, 18343489), (717, 16347963), (1081, 10843191), (1633, 7177887), (2151, 5449321), (3243, 3614397), (3337, 3512583), (4899, 2392629), (5041, 2325231), (5497, 2132343), (9729, 1204799), (10011, 1170861), (11233, 1043487), (14697, 797543), (15123, 775077), (16491, 710781), (16969, 690759), (30033, 390287), (33699, 347829), (45369, 258359), (49473, 236927), (50907, 230253), (76751, 152721), (101097, 115943)]