18988564

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^2\times {\mathrm{307}}^1$

素因数の和:412

約数の個数: 36

約数和(自身を含む): 38928736

約数和(自身を除く): 19940172

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 307, 329, 614, 658, 1228, 1316, 2149, 2209, 4298, 4418, 8596, 8836, 14429, 15463, 28858, 30926, 57716, 61852, 101003, 202006, 404012, 678163, 1356326, 2712652, 4747141, 9494282, 18988564]

約数ペア:

[(1, 18988564), (2, 9494282), (4, 4747141), (7, 2712652), (14, 1356326), (28, 678163), (47, 404012), (94, 202006), (188, 101003), (307, 61852), (329, 57716), (614, 30926), (658, 28858), (1228, 15463), (1316, 14429), (2149, 8836), (2209, 8596), (4298, 4418)]