18689433

素因数分解:

$3^1\times 7^2\times {\mathrm{127139}}^1$

素因数の和:127156

約数の個数: 12

約数和(自身を含む): 28987920

約数和(自身を除く): 10298487

約数列:

[1, 3, 7, 21, 49, 147, 127139, 381417, 889973, 2669919, 6229811, 18689433]

約数ペア:

[(1, 18689433), (3, 6229811), (7, 2669919), (21, 889973), (49, 381417), (147, 127139)]