20290095

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{421}}^1$

素因数の和:462

約数の個数: 80

約数和(自身を含む): 44117568

約数和(自身を除く): 23827473

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 27, 35, 45, 51, 63, 81, 85, 105, 119, 135, 153, 189, 255, 315, 357, 405, 421, 459, 567, 595, 765, 945, 1071, 1263, 1377, 1785, 2105, 2295, 2835, 2947, 3213, 3789, 5355, 6315, 6885, 7157, 8841, 9639, 11367, 14735, 16065, 18945, 21471, 26523, 34101, 35785, 44205, 48195, 50099, 56835, 64413, 79569, 107355, 132615, 150297, 170505, 193239, 238707, 250495, 322065, 397845, 450891, 579717, 751485, 966195, 1193535, 1352673, 2254455, 2898585, 4058019, 6763365, 20290095]

約数ペア:

[(1, 20290095), (3, 6763365), (5, 4058019), (7, 2898585), (9, 2254455), (15, 1352673), (17, 1193535), (21, 966195), (27, 751485), (35, 579717), (45, 450891), (51, 397845), (63, 322065), (81, 250495), (85, 238707), (105, 193239), (119, 170505), (135, 150297), (153, 132615), (189, 107355), (255, 79569), (315, 64413), (357, 56835), (405, 50099), (421, 48195), (459, 44205), (567, 35785), (595, 34101), (765, 26523), (945, 21471), (1071, 18945), (1263, 16065), (1377, 14735), (1785, 11367), (2105, 9639), (2295, 8841), (2835, 7157), (2947, 6885), (3213, 6315), (3789, 5355)]