19906460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{142189}}^1$

素因数の和:142205

約数の個数: 24

約数和(自身を含む): 47775840

約数和(自身を除く): 27869380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 142189, 284378, 568756, 710945, 995323, 1421890, 1990646, 2843780, 3981292, 4976615, 9953230, 19906460]

約数ペア:

[(1, 19906460), (2, 9953230), (4, 4976615), (5, 3981292), (7, 2843780), (10, 1990646), (14, 1421890), (20, 995323), (28, 710945), (35, 568756), (70, 284378), (140, 142189)]