21348635

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{71}}^2$

素因数の和:176

約数の個数: 36

約数和(自身を含む): 32641392

約数和(自身を除く): 11292757

約数列:

[1, 5, 7, 11, 35, 55, 71, 77, 121, 355, 385, 497, 605, 781, 847, 2485, 3905, 4235, 5041, 5467, 8591, 25205, 27335, 35287, 42955, 55451, 60137, 176435, 277255, 300685, 388157, 609961, 1940785, 3049805, 4269727, 21348635]

約数ペア:

[(1, 21348635), (5, 4269727), (7, 3049805), (11, 1940785), (35, 609961), (55, 388157), (71, 300685), (77, 277255), (121, 176435), (355, 60137), (385, 55451), (497, 42955), (605, 35287), (781, 27335), (847, 25205), (2485, 8591), (3905, 5467), (4235, 5041)]