19705761

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{8389}}^1$

素因数の和:8430

約数の個数: 20

約数和(自身を含む): 30455700

約数和(自身を除く): 10749939

約数列:

[1, 3, 9, 27, 29, 81, 87, 261, 783, 2349, 8389, 25167, 75501, 226503, 243281, 679509, 729843, 2189529, 6568587, 19705761]

約数ペア:

[(1, 19705761), (3, 6568587), (9, 2189529), (27, 729843), (29, 679509), (81, 243281), (87, 226503), (261, 75501), (783, 25167), (2349, 8389)]