18878188

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{347}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 39755520

約数和(自身を除く): 20877332

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 67, 116, 134, 203, 268, 347, 406, 469, 694, 812, 938, 1388, 1876, 1943, 2429, 3886, 4858, 7772, 9716, 10063, 13601, 20126, 23249, 27202, 40252, 46498, 54404, 70441, 92996, 140882, 162743, 281764, 325486, 650972, 674221, 1348442, 2696884, 4719547, 9439094, 18878188]

約数ペア:

[(1, 18878188), (2, 9439094), (4, 4719547), (7, 2696884), (14, 1348442), (28, 674221), (29, 650972), (58, 325486), (67, 281764), (116, 162743), (134, 140882), (203, 92996), (268, 70441), (347, 54404), (406, 46498), (469, 40252), (694, 27202), (812, 23249), (938, 20126), (1388, 13601), (1876, 10063), (1943, 9716), (2429, 7772), (3886, 4858)]