21075523

素因数分解:

$7^1\times {\mathrm{127}}^1\times {\mathrm{151}}^1\times {\mathrm{157}}^1$

素因数の和:442

約数の個数: 16

約数和(自身を含む): 24592384

約数和(自身を除く): 3516861

約数列:

[1, 7, 127, 151, 157, 889, 1057, 1099, 19177, 19939, 23707, 134239, 139573, 165949, 3010789, 21075523]

約数ペア:

[(1, 21075523), (7, 3010789), (127, 165949), (151, 139573), (157, 134239), (889, 23707), (1057, 19939), (1099, 19177)]