20975121153

素因数分解:

$3^7\times 7^2\times {\mathrm{195731}}^1$

素因数の和:195766

約数の個数: 48

約数和(自身を含む): 36594054720

約数和(自身を除く): 15618933567

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 441, 567, 729, 1323, 1701, 2187, 3969, 5103, 11907, 15309, 35721, 107163, 195731, 587193, 1370117, 1761579, 4110351, 5284737, 9590819, 12331053, 15854211, 28772457, 36993159, 47562633, 86317371, 110979477, 142687899, 258952113, 332938431, 428063697, 776856339, 998815293, 2330569017, 2996445879, 6991707051, 20975121153]

約数ペア:

[(1, 20975121153), (3, 6991707051), (7, 2996445879), (9, 2330569017), (21, 998815293), (27, 776856339), (49, 428063697), (63, 332938431), (81, 258952113), (147, 142687899), (189, 110979477), (243, 86317371), (441, 47562633), (567, 36993159), (729, 28772457), (1323, 15854211), (1701, 12331053), (2187, 9590819), (3969, 5284737), (5103, 4110351), (11907, 1761579), (15309, 1370117), (35721, 587193), (107163, 195731)]