81221165

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{6857}}^1$

素因数の和:6988

約数の個数: 16

約数和(自身を含む): 102705408

約数和(自身を除く): 21484243

約数列:

[1, 5, 23, 103, 115, 515, 2369, 6857, 11845, 34285, 157711, 706271, 788555, 3531355, 16244233, 81221165]

約数ペア:

[(1, 81221165), (5, 16244233), (23, 3531355), (103, 788555), (115, 706271), (515, 157711), (2369, 34285), (6857, 11845)]