20947982

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{13411}}^1$

素因数の和:13495

約数の個数: 16

約数和(自身を含む): 34763904

約数和(自身を除く): 13815922

約数列:

[1, 2, 11, 22, 71, 142, 781, 1562, 13411, 26822, 147521, 295042, 952181, 1904362, 10473991, 20947982]

約数ペア:

[(1, 20947982), (2, 10473991), (11, 1904362), (22, 952181), (71, 295042), (142, 147521), (781, 26822), (1562, 13411)]