21076795

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{1489}}^1$

素因数の和:1662

約数の個数: 16

約数和(自身を含む): 26820000

約数和(自身を除く): 5743205

約数列:

[1, 5, 19, 95, 149, 745, 1489, 2831, 7445, 14155, 28291, 141455, 221861, 1109305, 4215359, 21076795]

約数ペア:

[(1, 21076795), (5, 4215359), (19, 1109305), (95, 221861), (149, 141455), (745, 28291), (1489, 14155), (2831, 7445)]