20739938401

素因数分解:

$7^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{467}}^1$

素因数の和:711

約数の個数: 72

約数和(自身を含む): 27181350144

約数和(自身を除く): 6441411743

約数列:

[1, 7, 13, 31, 49, 91, 169, 173, 217, 403, 467, 637, 1183, 1211, 1519, 2249, 2821, 3269, 5239, 5363, 6071, 8281, 8477, 14477, 15743, 19747, 22883, 29237, 36673, 37541, 42497, 69719, 78923, 80791, 101339, 110201, 188201, 204659, 256711, 262787, 297479, 488033, 552461, 565537, 709373, 906347, 1050283, 1317407, 1432613, 2446613, 2504521, 3416231, 3867227, 3958759, 6344429, 7351981, 9221849, 13653679, 17126291, 17531647, 32558773, 44411003, 51463867, 95575753, 119884037, 122721529, 227911411, 423264049, 669030271, 1595379877, 2962848343, 20739938401]

約数ペア:

[(1, 20739938401), (7, 2962848343), (13, 1595379877), (31, 669030271), (49, 423264049), (91, 227911411), (169, 122721529), (173, 119884037), (217, 95575753), (403, 51463867), (467, 44411003), (637, 32558773), (1183, 17531647), (1211, 17126291), (1519, 13653679), (2249, 9221849), (2821, 7351981), (3269, 6344429), (5239, 3958759), (5363, 3867227), (6071, 3416231), (8281, 2504521), (8477, 2446613), (14477, 1432613), (15743, 1317407), (19747, 1050283), (22883, 906347), (29237, 709373), (36673, 565537), (37541, 552461), (42497, 488033), (69719, 297479), (78923, 262787), (80791, 256711), (101339, 204659), (110201, 188201)]