19902321

素因数分解:

$3^3\times {\mathrm{83}}^2\times {\mathrm{107}}^1$

素因数の和:282

約数の個数: 24

約数和(自身を含む): 30123360

約数和(自身を除く): 10221039

約数列:

[1, 3, 9, 27, 83, 107, 249, 321, 747, 963, 2241, 2889, 6889, 8881, 20667, 26643, 62001, 79929, 186003, 239787, 737123, 2211369, 6634107, 19902321]

約数ペア:

[(1, 19902321), (3, 6634107), (9, 2211369), (27, 737123), (83, 239787), (107, 186003), (249, 79929), (321, 62001), (747, 26643), (963, 20667), (2241, 8881), (2889, 6889)]