21338859

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{281}}^1\times {\mathrm{1489}}^1$

素因数の和:1790

約数の個数: 16

約数和(自身を含む): 30252960

約数和(自身を除く): 8914101

約数列:

[1, 3, 17, 51, 281, 843, 1489, 4467, 4777, 14331, 25313, 75939, 418409, 1255227, 7112953, 21338859]

約数ペア:

[(1, 21338859), (3, 7112953), (17, 1255227), (51, 418409), (281, 75939), (843, 25313), (1489, 14331), (4467, 4777)]