21805232

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{12503}}^1$

素因数の和:12620

約数の個数: 20

約数和(自身を含む): 42638640

約数和(自身を除く): 20833408

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 12503, 25006, 50012, 100024, 200048, 1362827, 2725654, 5451308, 10902616, 21805232]

約数ペア:

[(1, 21805232), (2, 10902616), (4, 5451308), (8, 2725654), (16, 1362827), (109, 200048), (218, 100024), (436, 50012), (872, 25006), (1744, 12503)]