20992041

素因数分解:

$3^5\times 7^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:113

約数の個数: 72

約数和(自身を含む): 38342304

約数和(自身を除く): 17350263

約数列:

[1, 3, 7, 9, 21, 27, 41, 43, 49, 63, 81, 123, 129, 147, 189, 243, 287, 301, 369, 387, 441, 567, 861, 903, 1107, 1161, 1323, 1701, 1763, 2009, 2107, 2583, 2709, 3321, 3483, 3969, 5289, 6027, 6321, 7749, 8127, 9963, 10449, 11907, 12341, 15867, 18081, 18963, 23247, 24381, 37023, 47601, 54243, 56889, 69741, 73143, 86387, 111069, 142803, 162729, 170667, 259161, 333207, 428409, 488187, 512001, 777483, 999621, 2332449, 2998863, 6997347, 20992041]

約数ペア:

[(1, 20992041), (3, 6997347), (7, 2998863), (9, 2332449), (21, 999621), (27, 777483), (41, 512001), (43, 488187), (49, 428409), (63, 333207), (81, 259161), (123, 170667), (129, 162729), (147, 142803), (189, 111069), (243, 86387), (287, 73143), (301, 69741), (369, 56889), (387, 54243), (441, 47601), (567, 37023), (861, 24381), (903, 23247), (1107, 18963), (1161, 18081), (1323, 15867), (1701, 12341), (1763, 11907), (2009, 10449), (2107, 9963), (2583, 8127), (2709, 7749), (3321, 6321), (3483, 6027), (3969, 5289)]