42120081

素因数分解:

$3^4\times {\mathrm{331}}^1\times {\mathrm{1571}}^1$

素因数の和:1914

約数の個数: 20

約数和(自身を含む): 63150384

約数和(自身を除く): 21030303

約数列:

[1, 3, 9, 27, 81, 331, 993, 1571, 2979, 4713, 8937, 14139, 26811, 42417, 127251, 520001, 1560003, 4680009, 14040027, 42120081]

約数ペア:

[(1, 42120081), (3, 14040027), (9, 4680009), (27, 1560003), (81, 520001), (331, 127251), (993, 42417), (1571, 26811), (2979, 14139), (4713, 8937)]