219879989

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{1231}}^1$

素因数の和:1353

約数の個数: 32

約数和(自身を含む): 283852800

約数和(自身を除く): 63972811

約数列:

[1, 7, 17, 19, 79, 119, 133, 323, 553, 1231, 1343, 1501, 2261, 8617, 9401, 10507, 20927, 23389, 25517, 97249, 146489, 163723, 178619, 397613, 680743, 1653233, 1847731, 2783291, 11572631, 12934117, 31411427, 219879989]

約数ペア:

[(1, 219879989), (7, 31411427), (17, 12934117), (19, 11572631), (79, 2783291), (119, 1847731), (133, 1653233), (323, 680743), (553, 397613), (1231, 178619), (1343, 163723), (1501, 146489), (2261, 97249), (8617, 25517), (9401, 23389), (10507, 20927)]