21328461

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{10259}}^1$

素因数の和:10286

約数の個数: 32

約数和(自身を含む): 39398400

約数和(自身を除く): 18069939

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 99, 189, 231, 297, 693, 2079, 10259, 30777, 71813, 92331, 112849, 215439, 276993, 338547, 646317, 789943, 1015641, 1938951, 2369829, 3046923, 7109487, 21328461]

約数ペア:

[(1, 21328461), (3, 7109487), (7, 3046923), (9, 2369829), (11, 1938951), (21, 1015641), (27, 789943), (33, 646317), (63, 338547), (77, 276993), (99, 215439), (189, 112849), (231, 92331), (297, 71813), (693, 30777), (2079, 10259)]