21773297

素因数分解:

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

素因数の和:310

約数の個数: 32

約数和(自身を含む): 28896000

約数和(自身を除く): 7122703

約数列:

[1, 7, 13, 19, 49, 91, 133, 247, 257, 343, 637, 931, 1729, 1799, 3341, 4459, 4883, 6517, 12103, 12593, 23387, 34181, 63479, 84721, 88151, 163709, 239267, 444353, 1145963, 1674869, 3110471, 21773297]

約数ペア:

[(1, 21773297), (7, 3110471), (13, 1674869), (19, 1145963), (49, 444353), (91, 239267), (133, 163709), (247, 88151), (257, 84721), (343, 63479), (637, 34181), (931, 23387), (1729, 12593), (1799, 12103), (3341, 6517), (4459, 4883)]