21138424

素因数分解:

$2^3\times {\mathrm{277}}^1\times {\mathrm{9539}}^1$

素因数の和:9822

約数の個数: 16

約数和(自身を含む): 39781800

約数和(自身を除く): 18643376

約数列:

[1, 2, 4, 8, 277, 554, 1108, 2216, 9539, 19078, 38156, 76312, 2642303, 5284606, 10569212, 21138424]

約数ペア:

[(1, 21138424), (2, 10569212), (4, 5284606), (8, 2642303), (277, 76312), (554, 38156), (1108, 19078), (2216, 9539)]