217908431

素因数分解:

${\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{1039}}^1$

素因数の和:1155

約数の個数: 24

約数和(自身を含む): 253506240

約数和(自身を除く): 35597809

約数列:

[1, 13, 17, 73, 169, 221, 949, 1039, 1241, 2873, 12337, 13507, 16133, 17663, 75847, 175591, 209729, 229619, 986011, 1289399, 2985047, 12818143, 16762187, 217908431]

約数ペア:

[(1, 217908431), (13, 16762187), (17, 12818143), (73, 2985047), (169, 1289399), (221, 986011), (949, 229619), (1039, 209729), (1241, 175591), (2873, 75847), (12337, 17663), (13507, 16133)]