20806509

素因数分解:

$3^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1\times {\mathrm{523}}^1$

素因数の和:764

約数の個数: 16

約数和(自身を含む): 28296000

約数和(自身を除く): 7489491

約数列:

[1, 3, 89, 149, 267, 447, 523, 1569, 13261, 39783, 46547, 77927, 139641, 233781, 6935503, 20806509]

約数ペア:

[(1, 20806509), (3, 6935503), (89, 233781), (149, 139641), (267, 77927), (447, 46547), (523, 39783), (1569, 13261)]