21421744

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{43189}}^1$

素因数の和:43228

約数の個数: 20

約数和(自身を含む): 42844480

約数和(自身を除く): 21422736

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 43189, 86378, 172756, 345512, 691024, 1338859, 2677718, 5355436, 10710872, 21421744]

約数ペア:

[(1, 21421744), (2, 10710872), (4, 5355436), (8, 2677718), (16, 1338859), (31, 691024), (62, 345512), (124, 172756), (248, 86378), (496, 43189)]