21754899

素因数分解:

$3^4\times {\mathrm{419}}^1\times {\mathrm{641}}^1$

素因数の和:1072

約数の個数: 20

約数和(自身を含む): 32626440

約数和(自身を除く): 10871541

約数列:

[1, 3, 9, 27, 81, 419, 641, 1257, 1923, 3771, 5769, 11313, 17307, 33939, 51921, 268579, 805737, 2417211, 7251633, 21754899]

約数ペア:

[(1, 21754899), (3, 7251633), (9, 2417211), (27, 805737), (81, 268579), (419, 51921), (641, 33939), (1257, 17307), (1923, 11313), (3771, 5769)]