21178468

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:208

約数の個数: 48

約数和(自身を含む): 40466160

約数和(自身を除く): 19287692

約数列:

[1, 2, 4, 29, 41, 58, 61, 73, 82, 116, 122, 146, 164, 244, 292, 1189, 1769, 2117, 2378, 2501, 2993, 3538, 4234, 4453, 4756, 5002, 5986, 7076, 8468, 8906, 10004, 11972, 17812, 72529, 86797, 129137, 145058, 173594, 182573, 258274, 290116, 347188, 365146, 516548, 730292, 5294617, 10589234, 21178468]

約数ペア:

[(1, 21178468), (2, 10589234), (4, 5294617), (29, 730292), (41, 516548), (58, 365146), (61, 347188), (73, 290116), (82, 258274), (116, 182573), (122, 173594), (146, 145058), (164, 129137), (244, 86797), (292, 72529), (1189, 17812), (1769, 11972), (2117, 10004), (2378, 8906), (2501, 8468), (2993, 7076), (3538, 5986), (4234, 5002), (4453, 4756)]