28225127

素因数分解:

$7^3\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:172

約数の個数: 32

約数和(自身を含む): 35712000

約数和(自身を除く): 7486873

約数列:

[1, 7, 19, 49, 61, 71, 133, 343, 427, 497, 931, 1159, 1349, 2989, 3479, 4331, 6517, 8113, 9443, 20923, 24353, 30317, 56791, 66101, 82289, 212219, 397537, 462707, 576023, 1485533, 4032161, 28225127]

約数ペア:

[(1, 28225127), (7, 4032161), (19, 1485533), (49, 576023), (61, 462707), (71, 397537), (133, 212219), (343, 82289), (427, 66101), (497, 56791), (931, 30317), (1159, 24353), (1349, 20923), (2989, 9443), (3479, 8113), (4331, 6517)]