18981579

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{3851}}^1$

素因数の和:3938

約数の個数: 16

約数和(自身を含む): 26625024

約数和(自身を除く): 7643445

約数列:

[1, 3, 31, 53, 93, 159, 1643, 3851, 4929, 11553, 119381, 204103, 358143, 612309, 6327193, 18981579]

約数ペア:

[(1, 18981579), (3, 6327193), (31, 612309), (53, 358143), (93, 204103), (159, 119381), (1643, 11553), (3851, 4929)]