19665663

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{971}}^1$

素因数の和:1174

約数の個数: 16

約数和(自身を含む): 27029376

約数和(自身を除く): 7363713

約数列:

[1, 3, 43, 129, 157, 471, 971, 2913, 6751, 20253, 41753, 125259, 152447, 457341, 6555221, 19665663]

約数ペア:

[(1, 19665663), (3, 6555221), (43, 457341), (129, 152447), (157, 125259), (471, 41753), (971, 20253), (2913, 6751)]