12918385

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{421}}^1$

素因数の和:481

約数の個数: 24

約数和(自身を含む): 17364456

約数和(自身を除く): 4446071

約数列:

[1, 5, 17, 19, 85, 95, 323, 361, 421, 1615, 1805, 2105, 6137, 7157, 7999, 30685, 35785, 39995, 135983, 151981, 679915, 759905, 2583677, 12918385]

約数ペア:

[(1, 12918385), (5, 2583677), (17, 759905), (19, 679915), (85, 151981), (95, 135983), (323, 39995), (361, 35785), (421, 30685), (1615, 7999), (1805, 7157), (2105, 6137)]