13780449

素因数分解:

$3^4\times {\mathrm{61}}^1\times {\mathrm{2789}}^1$

素因数の和:2862

約数の個数: 20

約数和(自身を含む): 20930580

約数和(自身を除く): 7150131

約数列:

[1, 3, 9, 27, 61, 81, 183, 549, 1647, 2789, 4941, 8367, 25101, 75303, 170129, 225909, 510387, 1531161, 4593483, 13780449]

約数ペア:

[(1, 13780449), (3, 4593483), (9, 1531161), (27, 510387), (61, 225909), (81, 170129), (183, 75303), (549, 25101), (1647, 8367), (2789, 4941)]