21175749

素因数分解:

$3^5\times 7^1\times {\mathrm{59}}^1\times {\mathrm{211}}^1$

素因数の和:292

約数の個数: 48

約数和(自身を含む): 37040640

約数和(自身を除く): 15864891

約数列:

[1, 3, 7, 9, 21, 27, 59, 63, 81, 177, 189, 211, 243, 413, 531, 567, 633, 1239, 1477, 1593, 1701, 1899, 3717, 4431, 4779, 5697, 11151, 12449, 13293, 14337, 17091, 33453, 37347, 39879, 51273, 87143, 100359, 112041, 119637, 261429, 336123, 358911, 784287, 1008369, 2352861, 3025107, 7058583, 21175749]

約数ペア:

[(1, 21175749), (3, 7058583), (7, 3025107), (9, 2352861), (21, 1008369), (27, 784287), (59, 358911), (63, 336123), (81, 261429), (177, 119637), (189, 112041), (211, 100359), (243, 87143), (413, 51273), (531, 39879), (567, 37347), (633, 33453), (1239, 17091), (1477, 14337), (1593, 13293), (1701, 12449), (1899, 11151), (3717, 5697), (4431, 4779)]