19998657

素因数分解:

$3^6\times 7^1\times {\mathrm{3919}}^1$

素因数の和:3944

約数の個数: 28

約数和(自身を含む): 34276480

約数和(自身を除く): 14277823

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1701, 3919, 5103, 11757, 27433, 35271, 82299, 105813, 246897, 317439, 740691, 952317, 2222073, 2856951, 6666219, 19998657]

約数ペア:

[(1, 19998657), (3, 6666219), (7, 2856951), (9, 2222073), (21, 952317), (27, 740691), (63, 317439), (81, 246897), (189, 105813), (243, 82299), (567, 35271), (729, 27433), (1701, 11757), (3919, 5103)]