25981316

素因数分解:

$2^2\times {\mathrm{409}}^1\times {\mathrm{15881}}^1$

素因数の和:16294

約数の個数: 12

約数和(自身を含む): 45581340

約数和(自身を除く): 19600024

約数列:

[1, 2, 4, 409, 818, 1636, 15881, 31762, 63524, 6495329, 12990658, 25981316]

約数ペア:

[(1, 25981316), (2, 12990658), (4, 6495329), (409, 63524), (818, 31762), (1636, 15881)]