19991907

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{56957}}^1$

素因数の和:56979

約数の個数: 16

約数和(自身を含む): 31896480

約数和(自身を除く): 11904573

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 56957, 170871, 512613, 740441, 1537839, 2221323, 6663969, 19991907]

約数ペア:

[(1, 19991907), (3, 6663969), (9, 2221323), (13, 1537839), (27, 740441), (39, 512613), (117, 170871), (351, 56957)]