898900

素因数分解:

$2^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:204

約数の個数: 36

約数和(自身を含む): 1992060

約数和(自身を除く): 1093160

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 89, 100, 101, 178, 202, 356, 404, 445, 505, 890, 1010, 1780, 2020, 2225, 2525, 4450, 5050, 8900, 8989, 10100, 17978, 35956, 44945, 89890, 179780, 224725, 449450, 898900]

約数ペア:

[(1, 898900), (2, 449450), (4, 224725), (5, 179780), (10, 89890), (20, 44945), (25, 35956), (50, 17978), (89, 10100), (100, 8989), (101, 8900), (178, 5050), (202, 4450), (356, 2525), (404, 2225), (445, 2020), (505, 1780), (890, 1010)]