21181232

素因数分解:

$2^4\times {\mathrm{541}}^1\times {\mathrm{2447}}^1$

素因数の和:2996

約数の個数: 20

約数和(自身を含む): 41131296

約数和(自身を除く): 19950064

約数列:

[1, 2, 4, 8, 16, 541, 1082, 2164, 2447, 4328, 4894, 8656, 9788, 19576, 39152, 1323827, 2647654, 5295308, 10590616, 21181232]

約数ペア:

[(1, 21181232), (2, 10590616), (4, 5295308), (8, 2647654), (16, 1323827), (541, 39152), (1082, 19576), (2164, 9788), (2447, 8656), (4328, 4894)]