19990334

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1$

素因数の和:130

約数の個数: 72

約数和(自身を含む): 40555728

約数和(自身を除く): 20565394

約数列:

[1, 2, 7, 13, 14, 17, 26, 34, 49, 71, 91, 98, 119, 142, 169, 182, 221, 238, 338, 442, 497, 637, 833, 923, 994, 1183, 1207, 1274, 1547, 1666, 1846, 2366, 2414, 2873, 3094, 3479, 5746, 6461, 6958, 8281, 8449, 10829, 11999, 12922, 15691, 16562, 16898, 20111, 21658, 23998, 31382, 40222, 45227, 59143, 83993, 90454, 109837, 118286, 140777, 167986, 203983, 219674, 281554, 407966, 587951, 768859, 1175902, 1427881, 1537718, 2855762, 9995167, 19990334]

約数ペア:

[(1, 19990334), (2, 9995167), (7, 2855762), (13, 1537718), (14, 1427881), (17, 1175902), (26, 768859), (34, 587951), (49, 407966), (71, 281554), (91, 219674), (98, 203983), (119, 167986), (142, 140777), (169, 118286), (182, 109837), (221, 90454), (238, 83993), (338, 59143), (442, 45227), (497, 40222), (637, 31382), (833, 23998), (923, 21658), (994, 20111), (1183, 16898), (1207, 16562), (1274, 15691), (1547, 12922), (1666, 11999), (1846, 10829), (2366, 8449), (2414, 8281), (2873, 6958), (3094, 6461), (3479, 5746)]