18881291

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^2\times {\mathrm{157}}^1$

素因数の和:239

約数の個数: 24

約数和(自身を含む): 23119824

約数和(自身を除く): 4238533

約数列:

[1, 11, 13, 29, 143, 157, 319, 377, 841, 1727, 2041, 4147, 4553, 9251, 10933, 22451, 50083, 59189, 120263, 132037, 651079, 1452407, 1716481, 18881291]

約数ペア:

[(1, 18881291), (11, 1716481), (13, 1452407), (29, 651079), (143, 132037), (157, 120263), (319, 59189), (377, 50083), (841, 22451), (1727, 10933), (2041, 9251), (4147, 4553)]