20381613

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{22571}}^1$

素因数の和:22624

約数の個数: 16

約数和(自身を含む): 31781376

約数和(自身を除く): 11399763

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 22571, 67713, 157997, 473991, 970553, 2911659, 6793871, 20381613]

約数ペア:

[(1, 20381613), (3, 6793871), (7, 2911659), (21, 970553), (43, 473991), (129, 157997), (301, 67713), (903, 22571)]