20338871

素因数分解:

$7^4\times {\mathrm{43}}^1\times {\mathrm{197}}^1$

素因数の和:268

約数の個数: 20

約数和(自身を含む): 24402312

約数和(自身を除く): 4063441

約数列:

[1, 7, 43, 49, 197, 301, 343, 1379, 2107, 2401, 8471, 9653, 14749, 59297, 67571, 103243, 415079, 472997, 2905553, 20338871]

約数ペア:

[(1, 20338871), (7, 2905553), (43, 472997), (49, 415079), (197, 103243), (301, 67571), (343, 59297), (1379, 14749), (2107, 9653), (2401, 8471)]