18705279

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{1567}}^1$

素因数の和:1766

約数の個数: 16

約数和(自身を含む): 26191872

約数和(自身を除く): 7486593

約数列:

[1, 3, 23, 69, 173, 519, 1567, 3979, 4701, 11937, 36041, 108123, 271091, 813273, 6235093, 18705279]

約数ペア:

[(1, 18705279), (3, 6235093), (23, 813273), (69, 271091), (173, 108123), (519, 36041), (1567, 11937), (3979, 4701)]