255985839

素因数分解:

$3^4\times {\mathrm{199}}^1\times {\mathrm{15881}}^1$

素因数の和:16092

約数の個数: 20

約数和(自身を含む): 384344400

約数和(自身を除く): 128358561

約数列:

[1, 3, 9, 27, 81, 199, 597, 1791, 5373, 15881, 16119, 47643, 142929, 428787, 1286361, 3160319, 9480957, 28442871, 85328613, 255985839]

約数ペア:

[(1, 255985839), (3, 85328613), (9, 28442871), (27, 9480957), (81, 3160319), (199, 1286361), (597, 428787), (1791, 142929), (5373, 47643), (15881, 16119)]