19992921

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{26981}}^1$

素因数の和:27016

約数の個数: 16

約数和(自身を含む): 30219840

約数和(自身を除く): 10226919

約数列:

[1, 3, 13, 19, 39, 57, 247, 741, 26981, 80943, 350753, 512639, 1052259, 1537917, 6664307, 19992921]

約数ペア:

[(1, 19992921), (3, 6664307), (13, 1537917), (19, 1052259), (39, 512639), (57, 350753), (247, 80943), (741, 26981)]