19998013

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{2837}}^1$

素因数の和:2916

約数の個数: 16

約数和(自身を含む): 24520320

約数和(自身を除く): 4522307

約数列:

[1, 7, 19, 53, 133, 371, 1007, 2837, 7049, 19859, 53903, 150361, 377321, 1052527, 2856859, 19998013]

約数ペア:

[(1, 19998013), (7, 2856859), (19, 1052527), (53, 377321), (133, 150361), (371, 53903), (1007, 19859), (2837, 7049)]