218206521

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{621671}}^1$

素因数の和:621693

約数の個数: 16

約数和(自身を含む): 348136320

約数和(自身を除く): 129929799

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 621671, 1865013, 5595039, 8081723, 16785117, 24245169, 72735507, 218206521]

約数ペア:

[(1, 218206521), (3, 72735507), (9, 24245169), (13, 16785117), (27, 8081723), (39, 5595039), (117, 1865013), (351, 621671)]