28688013

素因数分解:

$3^4\times {\mathrm{149}}^1\times {\mathrm{2377}}^1$

素因数の和:2538

約数の個数: 20

約数和(自身を含む): 43160700

約数和(自身を除く): 14472687

約数列:

[1, 3, 9, 27, 81, 149, 447, 1341, 2377, 4023, 7131, 12069, 21393, 64179, 192537, 354173, 1062519, 3187557, 9562671, 28688013]

約数ペア:

[(1, 28688013), (3, 9562671), (9, 3187557), (27, 1062519), (81, 354173), (149, 192537), (447, 64179), (1341, 21393), (2377, 12069), (4023, 7131)]