215813689

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{7879}}^1$

素因数の和:7949

約数の個数: 24

約数和(自身を含む): 276682560

約数和(自身を除く): 60868871

約数列:

[1, 7, 13, 43, 49, 91, 301, 559, 637, 2107, 3913, 7879, 27391, 55153, 102427, 338797, 386071, 716989, 2371579, 4404361, 5018923, 16601053, 30830527, 215813689]

約数ペア:

[(1, 215813689), (7, 30830527), (13, 16601053), (43, 5018923), (49, 4404361), (91, 2371579), (301, 716989), (559, 386071), (637, 338797), (2107, 102427), (3913, 55153), (7879, 27391)]