51130863

素因数分解:

$3^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{71}}^2$

素因数の和:185

約数の個数: 54

約数和(自身を含む): 90929592

約数和(自身を除く): 39798729

約数列:

[1, 3, 7, 9, 21, 23, 49, 63, 69, 71, 147, 161, 207, 213, 441, 483, 497, 639, 1127, 1449, 1491, 1633, 3381, 3479, 4473, 4899, 5041, 10143, 10437, 11431, 14697, 15123, 31311, 34293, 35287, 45369, 80017, 102879, 105861, 115943, 240051, 247009, 317583, 347829, 720153, 741027, 811601, 1043487, 2223081, 2434803, 5681207, 7304409, 17043621, 51130863]

約数ペア:

[(1, 51130863), (3, 17043621), (7, 7304409), (9, 5681207), (21, 2434803), (23, 2223081), (49, 1043487), (63, 811601), (69, 741027), (71, 720153), (147, 347829), (161, 317583), (207, 247009), (213, 240051), (441, 115943), (483, 105861), (497, 102879), (639, 80017), (1127, 45369), (1449, 35287), (1491, 34293), (1633, 31311), (3381, 15123), (3479, 14697), (4473, 11431), (4899, 10437), (5041, 10143)]