21951107339

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{2543}}^1\times {\mathrm{26237}}^1$

素因数の和:28834

約数の個数: 16

約数和(自身を含む): 25631797248

約数和(自身を除く): 3680689909

約数列:

[1, 7, 47, 329, 2543, 17801, 26237, 119521, 183659, 836647, 1233139, 8631973, 66720691, 467044837, 3135872477, 21951107339]

約数ペア:

[(1, 21951107339), (7, 3135872477), (47, 467044837), (329, 66720691), (2543, 8631973), (17801, 1233139), (26237, 836647), (119521, 183659)]