21043431

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{1129}}^1$

素因数の和:1263

約数の個数: 24

約数和(自身を含む): 32318000

約数和(自身を除く): 11274569

約数列:

[1, 3, 9, 19, 57, 109, 171, 327, 981, 1129, 2071, 3387, 6213, 10161, 18639, 21451, 64353, 123061, 193059, 369183, 1107549, 2338159, 7014477, 21043431]

約数ペア:

[(1, 21043431), (3, 7014477), (9, 2338159), (19, 1107549), (57, 369183), (109, 193059), (171, 123061), (327, 64353), (981, 21451), (1129, 18639), (2071, 10161), (3387, 6213)]