85819540

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{31321}}^1$

素因数の和:31467

約数の個数: 24

約数和(自身を含む): 181542312

約数和(自身を除く): 95722772

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 31321, 62642, 125284, 156605, 313210, 626420, 4290977, 8581954, 17163908, 21454885, 42909770, 85819540]

約数ペア:

[(1, 85819540), (2, 42909770), (4, 21454885), (5, 17163908), (10, 8581954), (20, 4290977), (137, 626420), (274, 313210), (548, 156605), (685, 125284), (1370, 62642), (2740, 31321)]