20783931

素因数分解:

$3^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{7793}}^1$

素因数の和:7930

約数の個数: 16

約数和(自身を含む): 31924224

約数和(自身を除く): 11140293

約数列:

[1, 3, 7, 21, 127, 381, 889, 2667, 7793, 23379, 54551, 163653, 989711, 2969133, 6927977, 20783931]

約数ペア:

[(1, 20783931), (3, 6927977), (7, 2969133), (21, 989711), (127, 163653), (381, 54551), (889, 23379), (2667, 7793)]