40379800

素因数分解:

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

素因数の和:2116

約数の個数: 48

約数和(自身を含む): 94860000

約数和(自身を除く): 54480200

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 101, 200, 202, 404, 505, 808, 1010, 1999, 2020, 2525, 3998, 4040, 5050, 7996, 9995, 10100, 15992, 19990, 20200, 39980, 49975, 79960, 99950, 199900, 201899, 399800, 403798, 807596, 1009495, 1615192, 2018990, 4037980, 5047475, 8075960, 10094950, 20189900, 40379800]

約数ペア:

[(1, 40379800), (2, 20189900), (4, 10094950), (5, 8075960), (8, 5047475), (10, 4037980), (20, 2018990), (25, 1615192), (40, 1009495), (50, 807596), (100, 403798), (101, 399800), (200, 201899), (202, 199900), (404, 99950), (505, 79960), (808, 49975), (1010, 39980), (1999, 20200), (2020, 19990), (2525, 15992), (3998, 10100), (4040, 9995), (5050, 7996)]