19778109

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{6947}}^1$

素因数の和:7036

約数の個数: 16

約数和(自身を含む): 28792512

約数和(自身を除く): 9014403

約数列:

[1, 3, 13, 39, 73, 219, 949, 2847, 6947, 20841, 90311, 270933, 507131, 1521393, 6592703, 19778109]

約数ペア:

[(1, 19778109), (3, 6592703), (13, 1521393), (39, 507131), (73, 270933), (219, 90311), (949, 20841), (2847, 6947)]