21000446992

素因数分解:

$2^4\times 7^1\times {\mathrm{401}}^1\times {\mathrm{467591}}^1$

素因数の和:468007

約数の個数: 40

約数和(自身を含む): 46617052032

約数和(自身を除く): 25616605040

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 401, 802, 1604, 2807, 3208, 5614, 6416, 11228, 22456, 44912, 467591, 935182, 1870364, 3273137, 3740728, 6546274, 7481456, 13092548, 26185096, 52370192, 187503991, 375007982, 750015964, 1312527937, 1500031928, 2625055874, 3000063856, 5250111748, 10500223496, 21000446992]

約数ペア:

[(1, 21000446992), (2, 10500223496), (4, 5250111748), (7, 3000063856), (8, 2625055874), (14, 1500031928), (16, 1312527937), (28, 750015964), (56, 375007982), (112, 187503991), (401, 52370192), (802, 26185096), (1604, 13092548), (2807, 7481456), (3208, 6546274), (5614, 3740728), (6416, 3273137), (11228, 1870364), (22456, 935182), (44912, 467591)]