81631360

素因数分解:

$2^7\times 5^1\times {\mathrm{127549}}^1$

素因数の和:127568

約数の個数: 32

約数和(自身を含む): 195151500

約数和(自身を除く): 113520140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 127549, 255098, 510196, 637745, 1020392, 1275490, 2040784, 2550980, 4081568, 5101960, 8163136, 10203920, 16326272, 20407840, 40815680, 81631360]

約数ペア:

[(1, 81631360), (2, 40815680), (4, 20407840), (5, 16326272), (8, 10203920), (10, 8163136), (16, 5101960), (20, 4081568), (32, 2550980), (40, 2040784), (64, 1275490), (80, 1020392), (128, 637745), (160, 510196), (320, 255098), (640, 127549)]