19968654

素因数分解:

$2^1\times 3^1\times {\mathrm{1109}}^1\times {\mathrm{3001}}^1$

素因数の和:4115

約数の個数: 16

約数和(自身を含む): 39986640

約数和(自身を除く): 20017986

約数列:

[1, 2, 3, 6, 1109, 2218, 3001, 3327, 6002, 6654, 9003, 18006, 3328109, 6656218, 9984327, 19968654]

約数ペア:

[(1, 19968654), (2, 9984327), (3, 6656218), (6, 3328109), (1109, 18006), (2218, 9003), (3001, 6654), (3327, 6002)]