18930848

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{307}}^1$

素因数の和:405

約数の個数: 48

約数和(自身を含む): 39118464

約数和(自身を除く): 20187616

約数列:

[1, 2, 4, 8, 16, 32, 41, 47, 82, 94, 164, 188, 307, 328, 376, 614, 656, 752, 1228, 1312, 1504, 1927, 2456, 3854, 4912, 7708, 9824, 12587, 14429, 15416, 25174, 28858, 30832, 50348, 57716, 61664, 100696, 115432, 201392, 230864, 402784, 461728, 591589, 1183178, 2366356, 4732712, 9465424, 18930848]

約数ペア:

[(1, 18930848), (2, 9465424), (4, 4732712), (8, 2366356), (16, 1183178), (32, 591589), (41, 461728), (47, 402784), (82, 230864), (94, 201392), (164, 115432), (188, 100696), (307, 61664), (328, 57716), (376, 50348), (614, 30832), (656, 28858), (752, 25174), (1228, 15416), (1312, 14429), (1504, 12587), (1927, 9824), (2456, 7708), (3854, 4912)]