21393016

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{62189}}^1$

素因数の和:62238

約数の個数: 16

約数和(自身を含む): 41045400

約数和(自身を除く): 19652384

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 62189, 124378, 248756, 497512, 2674127, 5348254, 10696508, 21393016]

約数ペア:

[(1, 21393016), (2, 10696508), (4, 5348254), (8, 2674127), (43, 497512), (86, 248756), (172, 124378), (344, 62189)]