21505832

素因数分解:

$2^3\times {\mathrm{541}}^1\times {\mathrm{4969}}^1$

素因数の和:5516

約数の個数: 16

約数和(自身を含む): 40406100

約数和(自身を除く): 18900268

約数列:

[1, 2, 4, 8, 541, 1082, 2164, 4328, 4969, 9938, 19876, 39752, 2688229, 5376458, 10752916, 21505832]

約数ペア:

[(1, 21505832), (2, 10752916), (4, 5376458), (8, 2688229), (541, 39752), (1082, 19876), (2164, 9938), (4328, 4969)]