156978671571

素因数分解:

$3^4\times {\mathrm{1951}}^1\times {\mathrm{993341}}^1$

素因数の和:995304

約数の個数: 20

約数和(自身を含む): 234619433664

約数和(自身を除く): 77640762093

約数列:

[1, 3, 9, 27, 81, 1951, 5853, 17559, 52677, 158031, 993341, 2980023, 8940069, 26820207, 80460621, 1938008291, 5814024873, 17442074619, 52326223857, 156978671571]

約数ペア:

[(1, 156978671571), (3, 52326223857), (9, 17442074619), (27, 5814024873), (81, 1938008291), (1951, 80460621), (5853, 26820207), (17559, 8940069), (52677, 2980023), (158031, 993341)]