20807439

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{2503}}^1$

素因数の和:2686

約数の個数: 16

約数和(自身を含む): 29567232

約数和(自身を除く): 8759793

約数列:

[1, 3, 17, 51, 163, 489, 2503, 2771, 7509, 8313, 42551, 127653, 407989, 1223967, 6935813, 20807439]

約数ペア:

[(1, 20807439), (3, 6935813), (17, 1223967), (51, 407989), (163, 127653), (489, 42551), (2503, 8313), (2771, 7509)]