20790399

素因数分解:

$3^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{3163}}^1$

素因数の和:3486

約数の個数: 16

約数和(自身を含む): 31791872

約数和(自身を除く): 11001473

約数列:

[1, 3, 7, 21, 313, 939, 2191, 3163, 6573, 9489, 22141, 66423, 990019, 2970057, 6930133, 20790399]

約数ペア:

[(1, 20790399), (3, 6930133), (7, 2970057), (21, 990019), (313, 66423), (939, 22141), (2191, 9489), (3163, 6573)]