11981991

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{33563}}^1$

素因数の和:33590

約数の個数: 16

約数和(自身を含む): 19332864

約数和(自身を除く): 7350873

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 33563, 100689, 234941, 570571, 704823, 1711713, 3993997, 11981991]

約数ペア:

[(1, 11981991), (3, 3993997), (7, 1711713), (17, 704823), (21, 570571), (51, 234941), (119, 100689), (357, 33563)]