81424580

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{29717}}^1$

素因数の和:29863

約数の個数: 24

約数和(自身を含む): 172245528

約数和(自身を除く): 90820948

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 29717, 59434, 118868, 148585, 297170, 594340, 4071229, 8142458, 16284916, 20356145, 40712290, 81424580]

約数ペア:

[(1, 81424580), (2, 40712290), (4, 20356145), (5, 16284916), (10, 8142458), (20, 4071229), (137, 594340), (274, 297170), (548, 148585), (685, 118868), (1370, 59434), (2740, 29717)]