20509237

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{1117}}^1$

素因数の和:1228

約数の個数: 16

約数和(自身を含む): 24399232

約数和(自身を除く): 3889995

約数列:

[1, 7, 43, 61, 301, 427, 1117, 2623, 7819, 18361, 48031, 68137, 336217, 476959, 2929891, 20509237]

約数ペア:

[(1, 20509237), (7, 2929891), (43, 476959), (61, 336217), (301, 68137), (427, 48031), (1117, 18361), (2623, 7819)]