21713571

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:312

約数の個数: 36

約数和(自身を含む): 34967296

約数和(自身を除く): 13253725

約数列:

[1, 3, 9, 11, 33, 99, 121, 127, 157, 363, 381, 471, 1089, 1143, 1397, 1413, 1727, 4191, 5181, 12573, 15367, 15543, 18997, 19939, 46101, 56991, 59817, 138303, 170973, 179451, 219329, 657987, 1973961, 2412619, 7237857, 21713571]

約数ペア:

[(1, 21713571), (3, 7237857), (9, 2412619), (11, 1973961), (33, 657987), (99, 219329), (121, 179451), (127, 170973), (157, 138303), (363, 59817), (381, 56991), (471, 46101), (1089, 19939), (1143, 18997), (1397, 15543), (1413, 15367), (1727, 12573), (4191, 5181)]