20901966124

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{401960887}}^1$

素因数の和:401960904

約数の個数: 12

約数和(自身を含む): 39392167024

約数和(自身を除く): 18490200900

約数列:

[1, 2, 4, 13, 26, 52, 401960887, 803921774, 1607843548, 5225491531, 10450983062, 20901966124]

約数ペア:

[(1, 20901966124), (2, 10450983062), (4, 5225491531), (13, 1607843548), (26, 803921774), (52, 401960887)]