81540688

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{38903}}^1$

素因数の和:39042

約数の個数: 20

約数和(自身を含む): 159195168

約数和(自身を除く): 77654480

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 38903, 77806, 155612, 311224, 622448, 5096293, 10192586, 20385172, 40770344, 81540688]

約数ペア:

[(1, 81540688), (2, 40770344), (4, 20385172), (8, 10192586), (16, 5096293), (131, 622448), (262, 311224), (524, 155612), (1048, 77806), (2096, 38903)]