18399800

素因数分解:

$2^3\times 5^2\times {\mathrm{197}}^1\times {\mathrm{467}}^1$

素因数の和:680

約数の個数: 48

約数和(自身を含む): 43088760

約数和(自身を除く): 24688960

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 197, 200, 394, 467, 788, 934, 985, 1576, 1868, 1970, 2335, 3736, 3940, 4670, 4925, 7880, 9340, 9850, 11675, 18680, 19700, 23350, 39400, 46700, 91999, 93400, 183998, 367996, 459995, 735992, 919990, 1839980, 2299975, 3679960, 4599950, 9199900, 18399800]

約数ペア:

[(1, 18399800), (2, 9199900), (4, 4599950), (5, 3679960), (8, 2299975), (10, 1839980), (20, 919990), (25, 735992), (40, 459995), (50, 367996), (100, 183998), (197, 93400), (200, 91999), (394, 46700), (467, 39400), (788, 23350), (934, 19700), (985, 18680), (1576, 11675), (1868, 9850), (1970, 9340), (2335, 7880), (3736, 4925), (3940, 4670)]