20581389

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{5233}}^1$

素因数の和:5281

約数の個数: 24

約数和(自身を含む): 32660160

約数和(自身を除く): 12078771

約数列:

[1, 3, 9, 19, 23, 57, 69, 171, 207, 437, 1311, 3933, 5233, 15699, 47097, 99427, 120359, 298281, 361077, 894843, 1083231, 2286821, 6860463, 20581389]

約数ペア:

[(1, 20581389), (3, 6860463), (9, 2286821), (19, 1083231), (23, 894843), (57, 361077), (69, 298281), (171, 120359), (207, 99427), (437, 47097), (1311, 15699), (3933, 5233)]