21650260

素因数分解:

$2^2\times 5^1\times {\mathrm{547}}^1\times {\mathrm{1979}}^1$

素因数の和:2535

約数の個数: 24

約数和(自身を含む): 45571680

約数和(自身を除く): 23921420

約数列:

[1, 2, 4, 5, 10, 20, 547, 1094, 1979, 2188, 2735, 3958, 5470, 7916, 9895, 10940, 19790, 39580, 1082513, 2165026, 4330052, 5412565, 10825130, 21650260]

約数ペア:

[(1, 21650260), (2, 10825130), (4, 5412565), (5, 4330052), (10, 2165026), (20, 1082513), (547, 39580), (1094, 19790), (1979, 10940), (2188, 9895), (2735, 7916), (3958, 5470)]