21841287

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{1993}}^1$

素因数の和:2290

約数の個数: 16

約数和(自身を含む): 31489248

約数和(自身を除く): 9647961

約数列:

[1, 3, 13, 39, 281, 843, 1993, 3653, 5979, 10959, 25909, 77727, 560033, 1680099, 7280429, 21841287]

約数ペア:

[(1, 21841287), (3, 7280429), (13, 1680099), (39, 560033), (281, 77727), (843, 25909), (1993, 10959), (3653, 5979)]