21097993

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{2417}}^1$

素因数の和:2496

約数の個数: 16

約数和(自身を含む): 25534080

約数和(自身を除く): 4436087

約数列:

[1, 7, 29, 43, 203, 301, 1247, 2417, 8729, 16919, 70093, 103931, 490651, 727517, 3013999, 21097993]

約数ペア:

[(1, 21097993), (7, 3013999), (29, 727517), (43, 490651), (203, 103931), (301, 70093), (1247, 16919), (2417, 8729)]