21031396040

素因数分解:

$2^3\times 5^1\times {\mathrm{525784901}}^1$

素因数の和:525784912

約数の個数: 16

約数和(自身を含む): 47320641180

約数和(自身を除く): 26289245140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 525784901, 1051569802, 2103139604, 2628924505, 4206279208, 5257849010, 10515698020, 21031396040]

約数ペア:

[(1, 21031396040), (2, 10515698020), (4, 5257849010), (5, 4206279208), (8, 2628924505), (10, 2103139604), (20, 1051569802), (40, 525784901)]