18545555

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{439}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 27371520

約数和(自身を除く): 8825965

約数列:

[1, 5, 7, 17, 35, 71, 85, 119, 355, 439, 497, 595, 1207, 2195, 2485, 3073, 6035, 7463, 8449, 15365, 31169, 37315, 42245, 52241, 155845, 218183, 261205, 529873, 1090915, 2649365, 3709111, 18545555]

約数ペア:

[(1, 18545555), (5, 3709111), (7, 2649365), (17, 1090915), (35, 529873), (71, 261205), (85, 218183), (119, 155845), (355, 52241), (439, 42245), (497, 37315), (595, 31169), (1207, 15365), (2195, 8449), (2485, 7463), (3073, 6035)]