131461520

素因数分解:

$2^4\times 5^1\times {\mathrm{1643269}}^1$

素因数の和:1643282

約数の個数: 20

約数和(自身を含む): 305648220

約数和(自身を除く): 174186700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1643269, 3286538, 6573076, 8216345, 13146152, 16432690, 26292304, 32865380, 65730760, 131461520]

約数ペア:

[(1, 131461520), (2, 65730760), (4, 32865380), (5, 26292304), (8, 16432690), (10, 13146152), (16, 8216345), (20, 6573076), (40, 3286538), (80, 1643269)]