16720857

素因数分解:

$3^3\times {\mathrm{421}}^1\times {\mathrm{1471}}^1$

素因数の和:1901

約数の個数: 16

約数和(自身を含む): 24847360

約数和(自身を除く): 8126503

約数列:

[1, 3, 9, 27, 421, 1263, 1471, 3789, 4413, 11367, 13239, 39717, 619291, 1857873, 5573619, 16720857]

約数ペア:

[(1, 16720857), (3, 5573619), (9, 1857873), (27, 619291), (421, 39717), (1263, 13239), (1471, 11367), (3789, 4413)]