19983957

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{9239}}^1$

素因数の和:9352

約数の個数: 16

約数和(自身を含む): 30750720

約数和(自身を除く): 10766763

約数列:

[1, 3, 7, 21, 103, 309, 721, 2163, 9239, 27717, 64673, 194019, 951617, 2854851, 6661319, 19983957]

約数ペア:

[(1, 19983957), (3, 6661319), (7, 2854851), (21, 951617), (103, 194019), (309, 64673), (721, 27717), (2163, 9239)]