20112978249

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{991}}^1\times {\mathrm{24781}}^1$

素因数の和:25798

約数の個数: 48

約数和(自身を含む): 35793931264

約数和(自身を除く): 15680953015

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 991, 2973, 6937, 8919, 12883, 20811, 24781, 38649, 62433, 74343, 90181, 115947, 173467, 223029, 270543, 322153, 520401, 811629, 966459, 1561203, 2255071, 2899377, 6765213, 20295639, 24557971, 73673913, 171905797, 221021739, 319253623, 515717391, 957760869, 1547152173, 2234775361, 2873282607, 6704326083, 20112978249]

約数ペア:

[(1, 20112978249), (3, 6704326083), (7, 2873282607), (9, 2234775361), (13, 1547152173), (21, 957760869), (39, 515717391), (63, 319253623), (91, 221021739), (117, 171905797), (273, 73673913), (819, 24557971), (991, 20295639), (2973, 6765213), (6937, 2899377), (8919, 2255071), (12883, 1561203), (20811, 966459), (24781, 811629), (38649, 520401), (62433, 322153), (74343, 270543), (90181, 223029), (115947, 173467)]