20043655

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{431}}^1$

素因数の和:638

約数の個数: 16

約数和(自身を含む): 24634368

約数和(自身を除く): 4590713

約数列:

[1, 5, 71, 131, 355, 431, 655, 2155, 9301, 30601, 46505, 56461, 153005, 282305, 4008731, 20043655]

約数ペア:

[(1, 20043655), (5, 4008731), (71, 282305), (131, 153005), (355, 56461), (431, 46505), (655, 30601), (2155, 9301)]