642321

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1$

素因数の和:165

約数の個数: 24

約数和(自身を含む): 1010880

約数和(自身を除く): 368559

約数列:

[1, 3, 9, 23, 29, 69, 87, 107, 207, 261, 321, 667, 963, 2001, 2461, 3103, 6003, 7383, 9309, 22149, 27927, 71369, 214107, 642321]

約数ペア:

[(1, 642321), (3, 214107), (9, 71369), (23, 27927), (29, 22149), (69, 9309), (87, 7383), (107, 6003), (207, 3103), (261, 2461), (321, 2001), (667, 963)]