81129080

素因数分解:

$2^3\times 5^1\times {\mathrm{2028227}}^1$

素因数の和:2028238

約数の個数: 16

約数和(自身を含む): 182540520

約数和(自身を除く): 101411440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2028227, 4056454, 8112908, 10141135, 16225816, 20282270, 40564540, 81129080]

約数ペア:

[(1, 81129080), (2, 40564540), (4, 20282270), (5, 16225816), (8, 10141135), (10, 8112908), (20, 4056454), (40, 2028227)]