21821421

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{313}}^1\times {\mathrm{1367}}^1$

素因数の和:1700

約数の個数: 16

約数和(自身を含む): 30927744

約数和(自身を除く): 9106323

約数列:

[1, 3, 17, 51, 313, 939, 1367, 4101, 5321, 15963, 23239, 69717, 427871, 1283613, 7273807, 21821421]

約数ペア:

[(1, 21821421), (3, 7273807), (17, 1283613), (51, 427871), (313, 69717), (939, 23239), (1367, 15963), (4101, 5321)]