80538340

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{211943}}^1$

素因数の和:211971

約数の個数: 24

約数和(自身を含む): 178032960

約数和(自身を除く): 97494620

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 211943, 423886, 847772, 1059715, 2119430, 4026917, 4238860, 8053834, 16107668, 20134585, 40269170, 80538340]

約数ペア:

[(1, 80538340), (2, 40269170), (4, 20134585), (5, 16107668), (10, 8053834), (19, 4238860), (20, 4026917), (38, 2119430), (76, 1059715), (95, 847772), (190, 423886), (380, 211943)]