201899000

素因数分解:

$2^3\times 5^3\times {\mathrm{101}}^1\times {\mathrm{1999}}^1$

素因数の和:2121

約数の個数: 64

約数和(自身を含む): 477360000

約数和(自身を除く): 275461000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 101, 125, 200, 202, 250, 404, 500, 505, 808, 1000, 1010, 1999, 2020, 2525, 3998, 4040, 5050, 7996, 9995, 10100, 12625, 15992, 19990, 20200, 25250, 39980, 49975, 50500, 79960, 99950, 101000, 199900, 201899, 249875, 399800, 403798, 499750, 807596, 999500, 1009495, 1615192, 1999000, 2018990, 4037980, 5047475, 8075960, 10094950, 20189900, 25237375, 40379800, 50474750, 100949500, 201899000]

約数ペア:

[(1, 201899000), (2, 100949500), (4, 50474750), (5, 40379800), (8, 25237375), (10, 20189900), (20, 10094950), (25, 8075960), (40, 5047475), (50, 4037980), (100, 2018990), (101, 1999000), (125, 1615192), (200, 1009495), (202, 999500), (250, 807596), (404, 499750), (500, 403798), (505, 399800), (808, 249875), (1000, 201899), (1010, 199900), (1999, 101000), (2020, 99950), (2525, 79960), (3998, 50500), (4040, 49975), (5050, 39980), (7996, 25250), (9995, 20200), (10100, 19990), (12625, 15992)]