16978507

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{4339}}^1$

素因数の和:4402

約数の個数: 16

約数和(自身を含む): 21387520

約数和(自身を除く): 4409013

約数列:

[1, 7, 13, 43, 91, 301, 559, 3913, 4339, 30373, 56407, 186577, 394849, 1306039, 2425501, 16978507]

約数ペア:

[(1, 16978507), (7, 2425501), (13, 1306039), (43, 394849), (91, 186577), (301, 56407), (559, 30373), (3913, 4339)]