21329488

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{43003}}^1$

素因数の和:43042

約数の個数: 20

約数和(自身を含む): 42659968

約数和(自身を除く): 21330480

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 43003, 86006, 172012, 344024, 688048, 1333093, 2666186, 5332372, 10664744, 21329488]

約数ペア:

[(1, 21329488), (2, 10664744), (4, 5332372), (8, 2666186), (16, 1333093), (31, 688048), (62, 344024), (124, 172012), (248, 86006), (496, 43003)]