15491920

素因数分解:

$2^4\times 5^1\times {\mathrm{193649}}^1$

素因数の和:193662

約数の個数: 20

約数和(自身を含む): 36018900

約数和(自身を除く): 20526980

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 193649, 387298, 774596, 968245, 1549192, 1936490, 3098384, 3872980, 7745960, 15491920]

約数ペア:

[(1, 15491920), (2, 7745960), (4, 3872980), (5, 3098384), (8, 1936490), (10, 1549192), (16, 968245), (20, 774596), (40, 387298), (80, 193649)]