18311997

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{643}}^1\times {\mathrm{863}}^1$

素因数の和:1520

約数の個数: 16

約数和(自身を含む): 26707968

約数和(自身を除く): 8395971

約数列:

[1, 3, 11, 33, 643, 863, 1929, 2589, 7073, 9493, 21219, 28479, 554909, 1664727, 6103999, 18311997]

約数ペア:

[(1, 18311997), (3, 6103999), (11, 1664727), (33, 554909), (643, 28479), (863, 21219), (1929, 9493), (2589, 7073)]