81302864

素因数分解:

$2^4\times {\mathrm{311}}^1\times {\mathrm{16339}}^1$

素因数の和:16658

約数の個数: 20

約数和(自身を含む): 158040480

約数和(自身を除く): 76737616

約数列:

[1, 2, 4, 8, 16, 311, 622, 1244, 2488, 4976, 16339, 32678, 65356, 130712, 261424, 5081429, 10162858, 20325716, 40651432, 81302864]

約数ペア:

[(1, 81302864), (2, 40651432), (4, 20325716), (8, 10162858), (16, 5081429), (311, 261424), (622, 130712), (1244, 65356), (2488, 32678), (4976, 16339)]