18969657

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47543}}^1$

素因数の和:47572

約数の個数: 16

約数和(自身を含む): 30428160

約数和(自身を除く): 11458503

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 47543, 142629, 332801, 903317, 998403, 2709951, 6323219, 18969657]

約数ペア:

[(1, 18969657), (3, 6323219), (7, 2709951), (19, 998403), (21, 903317), (57, 332801), (133, 142629), (399, 47543)]