17938869

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{563}}^1$

素因数の和:641

約数の個数: 32

約数和(自身を含む): 27793920

約数和(自身を除く): 9855051

約数列:

[1, 3, 13, 19, 39, 43, 57, 129, 247, 559, 563, 741, 817, 1677, 1689, 2451, 7319, 10621, 10697, 21957, 24209, 31863, 32091, 72627, 139061, 314717, 417183, 459971, 944151, 1379913, 5979623, 17938869]

約数ペア:

[(1, 17938869), (3, 5979623), (13, 1379913), (19, 944151), (39, 459971), (43, 417183), (57, 314717), (129, 139061), (247, 72627), (559, 32091), (563, 31863), (741, 24209), (817, 21957), (1677, 10697), (1689, 10621), (2451, 7319)]