81078260

素因数分解:

$2^2\times 5^1\times {\mathrm{661}}^1\times {\mathrm{6133}}^1$

素因数の和:6803

約数の個数: 24

約数和(自身を含む): 170549736

約数和(自身を除く): 89471476

約数列:

[1, 2, 4, 5, 10, 20, 661, 1322, 2644, 3305, 6133, 6610, 12266, 13220, 24532, 30665, 61330, 122660, 4053913, 8107826, 16215652, 20269565, 40539130, 81078260]

約数ペア:

[(1, 81078260), (2, 40539130), (4, 20269565), (5, 16215652), (10, 8107826), (20, 4053913), (661, 122660), (1322, 61330), (2644, 30665), (3305, 24532), (6133, 13220), (6610, 12266)]