18904023

素因数分解:

$3^4\times {\mathrm{419}}^1\times {\mathrm{557}}^1$

素因数の和:988

約数の個数: 20

約数和(自身を含む): 28357560

約数和(自身を除く): 9453537

約数列:

[1, 3, 9, 27, 81, 419, 557, 1257, 1671, 3771, 5013, 11313, 15039, 33939, 45117, 233383, 700149, 2100447, 6301341, 18904023]

約数ペア:

[(1, 18904023), (3, 6301341), (9, 2100447), (27, 700149), (81, 233383), (419, 45117), (557, 33939), (1257, 15039), (1671, 11313), (3771, 5013)]