19888983

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{8467}}^1$

素因数の和:8508

約数の個数: 20

約数和(自身を含む): 30738840

約数和(自身を除く): 10849857

約数列:

[1, 3, 9, 27, 29, 81, 87, 261, 783, 2349, 8467, 25401, 76203, 228609, 245543, 685827, 736629, 2209887, 6629661, 19888983]

約数ペア:

[(1, 19888983), (3, 6629661), (9, 2209887), (27, 736629), (29, 685827), (81, 245543), (87, 228609), (261, 76203), (783, 25401), (2349, 8467)]