19478660

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{7109}}^1$

素因数の和:7255

約数の個数: 24

約数和(自身を含む): 41209560

約数和(自身を除く): 21730900

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 7109, 14218, 28436, 35545, 71090, 142180, 973933, 1947866, 3895732, 4869665, 9739330, 19478660]

約数ペア:

[(1, 19478660), (2, 9739330), (4, 4869665), (5, 3895732), (10, 1947866), (20, 973933), (137, 142180), (274, 71090), (548, 35545), (685, 28436), (1370, 14218), (2740, 7109)]