18663591

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{971}}^1$

素因数の和:1166

約数の個数: 16

約数和(自身を含む): 25660800

約数和(自身を除く): 6997209

約数列:

[1, 3, 43, 129, 149, 447, 971, 2913, 6407, 19221, 41753, 125259, 144679, 434037, 6221197, 18663591]

約数ペア:

[(1, 18663591), (3, 6221197), (43, 434037), (129, 144679), (149, 125259), (447, 41753), (971, 19221), (2913, 6407)]