19991847

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{3469}}^1$

素因数の和:3602

約数の個数: 16

約数和(自身を含む): 28481760

約数和(自身を除く): 8489913

約数列:

[1, 3, 17, 51, 113, 339, 1921, 3469, 5763, 10407, 58973, 176919, 391997, 1175991, 6663949, 19991847]

約数ペア:

[(1, 19991847), (3, 6663949), (17, 1175991), (51, 391997), (113, 176919), (339, 58973), (1921, 10407), (3469, 5763)]