19390300

素因数分解:

$2^2\times 5^2\times {\mathrm{97}}^1\times {\mathrm{1999}}^1$

素因数の和:2110

約数の個数: 36

約数和(自身を含む): 42532000

約数和(自身を除く): 23141700

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 97, 100, 194, 388, 485, 970, 1940, 1999, 2425, 3998, 4850, 7996, 9700, 9995, 19990, 39980, 49975, 99950, 193903, 199900, 387806, 775612, 969515, 1939030, 3878060, 4847575, 9695150, 19390300]

約数ペア:

[(1, 19390300), (2, 9695150), (4, 4847575), (5, 3878060), (10, 1939030), (20, 969515), (25, 775612), (50, 387806), (97, 199900), (100, 193903), (194, 99950), (388, 49975), (485, 39980), (970, 19990), (1940, 9995), (1999, 9700), (2425, 7996), (3998, 4850)]