21020216

素因数分解:

$2^3\times 7^2\times {\mathrm{53623}}^1$

素因数の和:53643

約数の個数: 24

約数和(自身を含む): 45848520

約数和(自身を除く): 24828304

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392, 53623, 107246, 214492, 375361, 428984, 750722, 1501444, 2627527, 3002888, 5255054, 10510108, 21020216]

約数ペア:

[(1, 21020216), (2, 10510108), (4, 5255054), (7, 3002888), (8, 2627527), (14, 1501444), (28, 750722), (49, 428984), (56, 375361), (98, 214492), (196, 107246), (392, 53623)]