18564988

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{947}}^1$

素因数の和:1006

約数の個数: 36

約数和(自身を含む): 36431640

約数和(自身を除く): 17866652

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 116, 169, 338, 377, 676, 754, 947, 1508, 1894, 3788, 4901, 9802, 12311, 19604, 24622, 27463, 49244, 54926, 109852, 160043, 320086, 357019, 640172, 714038, 1428076, 4641247, 9282494, 18564988]

約数ペア:

[(1, 18564988), (2, 9282494), (4, 4641247), (13, 1428076), (26, 714038), (29, 640172), (52, 357019), (58, 320086), (116, 160043), (169, 109852), (338, 54926), (377, 49244), (676, 27463), (754, 24622), (947, 19604), (1508, 12311), (1894, 9802), (3788, 4901)]