18857991

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{1103}}^1$

素因数の和:1286

約数の個数: 16

約数和(自身を含む): 25966080

約数和(自身を除く): 7108089

約数列:

[1, 3, 41, 123, 139, 417, 1103, 3309, 5699, 17097, 45223, 135669, 153317, 459951, 6285997, 18857991]

約数ペア:

[(1, 18857991), (3, 6285997), (41, 459951), (123, 153317), (139, 135669), (417, 45223), (1103, 17097), (3309, 5699)]