2578340

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{941}}^1$

素因数の和:1087

約数の個数: 24

約数和(自身を含む): 5459832

約数和(自身を除く): 2881492

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 941, 1370, 1882, 2740, 3764, 4705, 9410, 18820, 128917, 257834, 515668, 644585, 1289170, 2578340]

約数ペア:

[(1, 2578340), (2, 1289170), (4, 644585), (5, 515668), (10, 257834), (20, 128917), (137, 18820), (274, 9410), (548, 4705), (685, 3764), (941, 2740), (1370, 1882)]