18281913

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{107}}^1\times {\mathrm{337}}^1$

素因数の和:473

約数の個数: 24

約数和(自身を含む): 26720928

約数和(自身を除く): 8439015

約数列:

[1, 3, 13, 39, 107, 169, 321, 337, 507, 1011, 1391, 4173, 4381, 13143, 18083, 36059, 54249, 56953, 108177, 170859, 468767, 1406301, 6093971, 18281913]

約数ペア:

[(1, 18281913), (3, 6093971), (13, 1406301), (39, 468767), (107, 170859), (169, 108177), (321, 56953), (337, 54249), (507, 36059), (1011, 18083), (1391, 13143), (4173, 4381)]