7171787

素因数分解:

$7^4\times {\mathrm{29}}^1\times {\mathrm{103}}^1$

素因数の和:160

約数の個数: 20

約数和(自身を含む): 8739120

約数和(自身を除く): 1567333

約数列:

[1, 7, 29, 49, 103, 203, 343, 721, 1421, 2401, 2987, 5047, 9947, 20909, 35329, 69629, 146363, 247303, 1024541, 7171787]

約数ペア:

[(1, 7171787), (7, 1024541), (29, 247303), (49, 146363), (103, 69629), (203, 35329), (343, 20909), (721, 9947), (1421, 5047), (2401, 2987)]