18697653

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{647}}^1$

素因数の和:698

約数の個数: 36

約数和(自身を含む): 30831840

約数和(自身を除く): 12134187

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 169, 171, 247, 507, 647, 741, 1521, 1941, 2223, 3211, 5823, 8411, 9633, 12293, 25233, 28899, 36879, 75699, 109343, 110637, 159809, 328029, 479427, 984087, 1438281, 2077517, 6232551, 18697653]

約数ペア:

[(1, 18697653), (3, 6232551), (9, 2077517), (13, 1438281), (19, 984087), (39, 479427), (57, 328029), (117, 159809), (169, 110637), (171, 109343), (247, 75699), (507, 36879), (647, 28899), (741, 25233), (1521, 12293), (1941, 9633), (2223, 8411), (3211, 5823)]