81931383

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{1667}}^1$

素因数の和:1843

約数の個数: 24

約数和(自身を含む): 122124288

約数和(自身を除く): 40192905

約数列:

[1, 3, 9, 43, 127, 129, 381, 387, 1143, 1667, 5001, 5461, 15003, 16383, 49149, 71681, 211709, 215043, 635127, 645129, 1905381, 9103487, 27310461, 81931383]

約数ペア:

[(1, 81931383), (3, 27310461), (9, 9103487), (43, 1905381), (127, 645129), (129, 635127), (381, 215043), (387, 211709), (1143, 71681), (1667, 49149), (5001, 16383), (5461, 15003)]