81628640

素因数分解:

$2^5\times 5^1\times {\mathrm{510179}}^1$

素因数の和:510194

約数の個数: 24

約数和(自身を含む): 192848040

約数和(自身を除く): 111219400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 510179, 1020358, 2040716, 2550895, 4081432, 5101790, 8162864, 10203580, 16325728, 20407160, 40814320, 81628640]

約数ペア:

[(1, 81628640), (2, 40814320), (4, 20407160), (5, 16325728), (8, 10203580), (10, 8162864), (16, 5101790), (20, 4081432), (32, 2550895), (40, 2040716), (80, 1020358), (160, 510179)]