19979662

素因数分解:

$2^1\times {\mathrm{73}}^1\times {\mathrm{281}}^1\times {\mathrm{487}}^1$

素因数の和:843

約数の個数: 16

約数和(自身を含む): 30550752

約数和(自身を除く): 10571090

約数列:

[1, 2, 73, 146, 281, 487, 562, 974, 20513, 35551, 41026, 71102, 136847, 273694, 9989831, 19979662]

約数ペア:

[(1, 19979662), (2, 9989831), (73, 273694), (146, 136847), (281, 71102), (487, 41026), (562, 35551), (974, 20513)]