18497727

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{9929}}^1$

素因数の和:9964

約数の個数: 20

約数和(自身を含む): 28836720

約数和(自身を除く): 10338993

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 9929, 29787, 89361, 228367, 268083, 685101, 804249, 2055303, 6165909, 18497727]

約数ペア:

[(1, 18497727), (3, 6165909), (9, 2055303), (23, 804249), (27, 685101), (69, 268083), (81, 228367), (207, 89361), (621, 29787), (1863, 9929)]