21055971551

素因数分解:

${\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{9901}}^1$

素因数の和:10119

約数の個数: 24

約数和(自身を含む): 22907603664

約数和(自身を除く): 1851632113

約数列:

[1, 19, 43, 137, 361, 817, 2603, 5891, 9901, 15523, 49457, 111929, 188119, 425743, 1356437, 2126651, 3574261, 8089117, 25772303, 58326791, 153693223, 489673757, 1108209029, 21055971551]

約数ペア:

[(1, 21055971551), (19, 1108209029), (43, 489673757), (137, 153693223), (361, 58326791), (817, 25772303), (2603, 8089117), (5891, 3574261), (9901, 2126651), (15523, 1356437), (49457, 425743), (111929, 188119)]