21178310

素因数分解:

$2^1\times 5^1\times {\mathrm{223}}^1\times {\mathrm{9497}}^1$

素因数の和:9727

約数の個数: 16

約数和(自身を含む): 38295936

約数和(自身を除く): 17117626

約数列:

[1, 2, 5, 10, 223, 446, 1115, 2230, 9497, 18994, 47485, 94970, 2117831, 4235662, 10589155, 21178310]

約数ペア:

[(1, 21178310), (2, 10589155), (5, 4235662), (10, 2117831), (223, 94970), (446, 47485), (1115, 18994), (2230, 9497)]