648081

素因数分解:

$3^6\times 7^1\times {\mathrm{127}}^1$

素因数の和:152

約数の個数: 28

約数和(自身を含む): 1119232

約数和(自身を除く): 471151

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 127, 189, 243, 381, 567, 729, 889, 1143, 1701, 2667, 3429, 5103, 8001, 10287, 24003, 30861, 72009, 92583, 216027, 648081]

約数ペア:

[(1, 648081), (3, 216027), (7, 92583), (9, 72009), (21, 30861), (27, 24003), (63, 10287), (81, 8001), (127, 5103), (189, 3429), (243, 2667), (381, 1701), (567, 1143), (729, 889)]