25328121

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{257}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 44037504

約数和(自身を除く): 18709383

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 247, 257, 273, 361, 399, 741, 771, 1083, 1729, 1799, 2527, 3341, 4693, 4883, 5187, 5397, 7581, 10023, 14079, 14649, 23387, 32851, 34181, 63479, 70161, 92777, 98553, 102543, 190437, 278331, 444353, 649439, 1206101, 1333059, 1948317, 3618303, 8442707, 25328121]

約数ペア:

[(1, 25328121), (3, 8442707), (7, 3618303), (13, 1948317), (19, 1333059), (21, 1206101), (39, 649439), (57, 444353), (91, 278331), (133, 190437), (247, 102543), (257, 98553), (273, 92777), (361, 70161), (399, 63479), (741, 34181), (771, 32851), (1083, 23387), (1729, 14649), (1799, 14079), (2527, 10023), (3341, 7581), (4693, 5397), (4883, 5187)]