20209785

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{31333}}^1$

素因数の和:31384

約数の個数: 16

約数和(自身を含む): 33088704

約数和(自身を除く): 12878919

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 31333, 93999, 156665, 469995, 1347319, 4041957, 6736595, 20209785]

約数ペア:

[(1, 20209785), (3, 6736595), (5, 4041957), (15, 1347319), (43, 469995), (129, 156665), (215, 93999), (645, 31333)]