21024549

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{199}}^1$

素因数の和:271

約数の個数: 64

約数和(自身を含む): 39424000

約数和(自身を除く): 18399451

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 43, 63, 91, 117, 129, 189, 199, 273, 301, 351, 387, 559, 597, 819, 903, 1161, 1393, 1677, 1791, 2457, 2587, 2709, 3913, 4179, 5031, 5373, 7761, 8127, 8557, 11739, 12537, 15093, 18109, 23283, 25671, 35217, 37611, 54327, 59899, 69849, 77013, 105651, 111241, 162981, 179697, 231039, 333723, 488943, 539091, 778687, 1001169, 1617273, 2336061, 3003507, 7008183, 21024549]

約数ペア:

[(1, 21024549), (3, 7008183), (7, 3003507), (9, 2336061), (13, 1617273), (21, 1001169), (27, 778687), (39, 539091), (43, 488943), (63, 333723), (91, 231039), (117, 179697), (129, 162981), (189, 111241), (199, 105651), (273, 77013), (301, 69849), (351, 59899), (387, 54327), (559, 37611), (597, 35217), (819, 25671), (903, 23283), (1161, 18109), (1393, 15093), (1677, 12537), (1791, 11739), (2457, 8557), (2587, 8127), (2709, 7761), (3913, 5373), (4179, 5031)]