20288247

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{26111}}^1$

素因数の和:26158

約数の個数: 16

約数和(自身を含む): 31752192

約数和(自身を除く): 11463945

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 26111, 78333, 182777, 548331, 966107, 2898321, 6762749, 20288247]

約数ペア:

[(1, 20288247), (3, 6762749), (7, 2898321), (21, 966107), (37, 548331), (111, 182777), (259, 78333), (777, 26111)]