408332020

素因数分解:

$2^2\times 5^1\times {\mathrm{1609}}^1\times {\mathrm{12689}}^1$

素因数の和:14307

約数の個数: 24

約数和(自身を含む): 858097800

約数和(自身を除く): 449765780

約数列:

[1, 2, 4, 5, 10, 20, 1609, 3218, 6436, 8045, 12689, 16090, 25378, 32180, 50756, 63445, 126890, 253780, 20416601, 40833202, 81666404, 102083005, 204166010, 408332020]

約数ペア:

[(1, 408332020), (2, 204166010), (4, 102083005), (5, 81666404), (10, 40833202), (20, 20416601), (1609, 253780), (3218, 126890), (6436, 63445), (8045, 50756), (12689, 32180), (16090, 25378)]