51997221

素因数分解:

$3^4\times {\mathrm{727}}^1\times {\mathrm{883}}^1$

素因数の和:1622

約数の個数: 20

約数和(自身を含む): 77869792

約数和(自身を除く): 25872571

約数列:

[1, 3, 9, 27, 81, 727, 883, 2181, 2649, 6543, 7947, 19629, 23841, 58887, 71523, 641941, 1925823, 5777469, 17332407, 51997221]

約数ペア:

[(1, 51997221), (3, 17332407), (9, 5777469), (27, 1925823), (81, 641941), (727, 71523), (883, 58887), (2181, 23841), (2649, 19629), (6543, 7947)]