20943957

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1\times {\mathrm{839}}^1$

素因数の和:1052

約数の個数: 16

約数和(自身を含む): 28667520

約数和(自身を除く): 7723563

約数列:

[1, 3, 53, 157, 159, 471, 839, 2517, 8321, 24963, 44467, 131723, 133401, 395169, 6981319, 20943957]

約数ペア:

[(1, 20943957), (3, 6981319), (53, 395169), (157, 133401), (159, 131723), (471, 44467), (839, 24963), (2517, 8321)]