85781180

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{31307}}^1$

素因数の和:31453

約数の個数: 24

約数和(自身を含む): 181461168

約数和(自身を除く): 95679988

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 31307, 62614, 125228, 156535, 313070, 626140, 4289059, 8578118, 17156236, 21445295, 42890590, 85781180]

約数ペア:

[(1, 85781180), (2, 42890590), (4, 21445295), (5, 17156236), (10, 8578118), (20, 4289059), (137, 626140), (274, 313070), (548, 156535), (685, 125228), (1370, 62614), (2740, 31307)]