21173373

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{337}}^1$

素因数の和:538

約数の個数: 32

約数和(自身を含む): 34070400

約数和(自身を除く): 12897027

約数列:

[1, 3, 9, 13, 27, 39, 117, 179, 337, 351, 537, 1011, 1611, 2327, 3033, 4381, 4833, 6981, 9099, 13143, 20943, 39429, 60323, 62829, 118287, 180969, 542907, 784199, 1628721, 2352597, 7057791, 21173373]

約数ペア:

[(1, 21173373), (3, 7057791), (9, 2352597), (13, 1628721), (27, 784199), (39, 542907), (117, 180969), (179, 118287), (337, 62829), (351, 60323), (537, 39429), (1011, 20943), (1611, 13143), (2327, 9099), (3033, 6981), (4381, 4833)]