21172085

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{349}}^1\times {\mathrm{1103}}^1$

素因数の和:1468

約数の個数: 16

約数和(自身を含む): 27820800

約数和(自身を除く): 6648715

約数列:

[1, 5, 11, 55, 349, 1103, 1745, 3839, 5515, 12133, 19195, 60665, 384947, 1924735, 4234417, 21172085]

約数ペア:

[(1, 21172085), (5, 4234417), (11, 1924735), (55, 384947), (349, 60665), (1103, 19195), (1745, 12133), (3839, 5515)]