18638019

素因数分解:

$3^4\times {\mathrm{109}}^1\times {\mathrm{2111}}^1$

素因数の和:2232

約数の個数: 20

約数和(自身を含む): 28110720

約数和(自身を除く): 9472701

約数列:

[1, 3, 9, 27, 81, 109, 327, 981, 2111, 2943, 6333, 8829, 18999, 56997, 170991, 230099, 690297, 2070891, 6212673, 18638019]

約数ペア:

[(1, 18638019), (3, 6212673), (9, 2070891), (27, 690297), (81, 230099), (109, 170991), (327, 56997), (981, 18999), (2111, 8829), (2943, 6333)]