19985919

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{1777}}^1$

素因数の和:1966

約数の個数: 16

約数和(自身を含む): 27992832

約数和(自身を除く): 8006913

約数列:

[1, 3, 23, 69, 163, 489, 1777, 3749, 5331, 11247, 40871, 122613, 289651, 868953, 6661973, 19985919]

約数ペア:

[(1, 19985919), (3, 6661973), (23, 868953), (69, 289651), (163, 122613), (489, 40871), (1777, 11247), (3749, 5331)]