20777025

素因数分解:

$3^1\times 5^2\times {\mathrm{139}}^1\times {\mathrm{1993}}^1$

素因数の和:2145

約数の個数: 24

約数和(自身を含む): 34615840

約数和(自身を除く): 13838815

約数列:

[1, 3, 5, 15, 25, 75, 139, 417, 695, 1993, 2085, 3475, 5979, 9965, 10425, 29895, 49825, 149475, 277027, 831081, 1385135, 4155405, 6925675, 20777025]

約数ペア:

[(1, 20777025), (3, 6925675), (5, 4155405), (15, 1385135), (25, 831081), (75, 277027), (139, 149475), (417, 49825), (695, 29895), (1993, 10425), (2085, 9965), (3475, 5979)]