20625717

素因数分解:

$3^1\times 7^2\times {\mathrm{193}}^1\times {\mathrm{727}}^1$

素因数の和:937

約数の個数: 24

約数和(自身を含む): 32200896

約数和(自身を除く): 11575179

約数列:

[1, 3, 7, 21, 49, 147, 193, 579, 727, 1351, 2181, 4053, 5089, 9457, 15267, 28371, 35623, 106869, 140311, 420933, 982177, 2946531, 6875239, 20625717]

約数ペア:

[(1, 20625717), (3, 6875239), (7, 2946531), (21, 982177), (49, 420933), (147, 140311), (193, 106869), (579, 35623), (727, 28371), (1351, 15267), (2181, 9457), (4053, 5089)]