21230385

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{128669}}^1$

素因数の和:128688

約数の個数: 16

約数和(自身を含む): 37056960

約数和(自身を除く): 15826575

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 128669, 386007, 643345, 1415359, 1930035, 4246077, 7076795, 21230385]

約数ペア:

[(1, 21230385), (3, 7076795), (5, 4246077), (11, 1930035), (15, 1415359), (33, 643345), (55, 386007), (165, 128669)]