18689697

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{17749}}^1$

素因数の和:17774

約数の個数: 20

約数和(自身を含む): 30068500

約数和(自身を除く): 11378803

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 17749, 53247, 159741, 230737, 479223, 692211, 1437669, 2076633, 6229899, 18689697]

約数ペア:

[(1, 18689697), (3, 6229899), (9, 2076633), (13, 1437669), (27, 692211), (39, 479223), (81, 230737), (117, 159741), (351, 53247), (1053, 17749)]