1990489870

素因数分解:

$2^1\times 5^1\times {\mathrm{821}}^1\times {\mathrm{242447}}^1$

素因数の和:243275

約数の個数: 16

約数和(自身を含む): 3587260608

約数和(自身を除く): 1596770738

約数列:

[1, 2, 5, 10, 821, 1642, 4105, 8210, 242447, 484894, 1212235, 2424470, 199048987, 398097974, 995244935, 1990489870]

約数ペア:

[(1, 1990489870), (2, 995244935), (5, 398097974), (10, 199048987), (821, 2424470), (1642, 1212235), (4105, 484894), (8210, 242447)]