18659979

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{3709}}^1$

素因数の和:3771

約数の個数: 24

約数和(自身を含む): 29709680

約数和(自身を除く): 11049701

約数列:

[1, 3, 9, 13, 39, 43, 117, 129, 387, 559, 1677, 3709, 5031, 11127, 33381, 48217, 144651, 159487, 433953, 478461, 1435383, 2073331, 6219993, 18659979]

約数ペア:

[(1, 18659979), (3, 6219993), (9, 2073331), (13, 1435383), (39, 478461), (43, 433953), (117, 159487), (129, 144651), (387, 48217), (559, 33381), (1677, 11127), (3709, 5031)]