18968500

素因数分解:

$2^2\times 5^3\times {\mathrm{59}}^1\times {\mathrm{643}}^1$

素因数の和:721

約数の個数: 48

約数和(自身を含む): 42194880

約数和(自身を除く): 23226380

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 59, 100, 118, 125, 236, 250, 295, 500, 590, 643, 1180, 1286, 1475, 2572, 2950, 3215, 5900, 6430, 7375, 12860, 14750, 16075, 29500, 32150, 37937, 64300, 75874, 80375, 151748, 160750, 189685, 321500, 379370, 758740, 948425, 1896850, 3793700, 4742125, 9484250, 18968500]

約数ペア:

[(1, 18968500), (2, 9484250), (4, 4742125), (5, 3793700), (10, 1896850), (20, 948425), (25, 758740), (50, 379370), (59, 321500), (100, 189685), (118, 160750), (125, 151748), (236, 80375), (250, 75874), (295, 64300), (500, 37937), (590, 32150), (643, 29500), (1180, 16075), (1286, 14750), (1475, 12860), (2572, 7375), (2950, 6430), (3215, 5900)]