12981759

素因数分解:

$3^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{3203}}^1$

素因数の和:3406

約数の個数: 16

約数和(自身を含む): 19890432

約数和(自身を除く): 6908673

約数列:

[1, 3, 7, 21, 193, 579, 1351, 3203, 4053, 9609, 22421, 67263, 618179, 1854537, 4327253, 12981759]

約数ペア:

[(1, 12981759), (3, 4327253), (7, 1854537), (21, 618179), (193, 67263), (579, 22421), (1351, 9609), (3203, 4053)]