19416397

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 28268352

約数和(自身を除く): 8851955

約数列:

[1, 7, 11, 13, 17, 49, 77, 91, 119, 143, 163, 187, 221, 539, 637, 833, 1001, 1141, 1309, 1547, 1793, 2119, 2431, 2771, 7007, 7987, 9163, 10829, 12551, 14833, 17017, 19397, 23309, 30481, 36023, 87857, 103831, 119119, 135779, 163163, 213367, 252161, 396253, 1142141, 1493569, 1765127, 2773771, 19416397]

約数ペア:

[(1, 19416397), (7, 2773771), (11, 1765127), (13, 1493569), (17, 1142141), (49, 396253), (77, 252161), (91, 213367), (119, 163163), (143, 135779), (163, 119119), (187, 103831), (221, 87857), (539, 36023), (637, 30481), (833, 23309), (1001, 19397), (1141, 17017), (1309, 14833), (1547, 12551), (1793, 10829), (2119, 9163), (2431, 7987), (2771, 7007)]