81009745

素因数分解:

$5^1\times {\mathrm{131}}^1\times {\mathrm{337}}^1\times {\mathrm{367}}^1$

素因数の和:840

約数の個数: 16

約数和(自身を含む): 98512128

約数和(自身を除く): 17502383

約数列:

[1, 5, 131, 337, 367, 655, 1685, 1835, 44147, 48077, 123679, 220735, 240385, 618395, 16201949, 81009745]

約数ペア:

[(1, 81009745), (5, 16201949), (131, 618395), (337, 240385), (367, 220735), (655, 123679), (1685, 48077), (1835, 44147)]