21711290

素因数分解:

$2^1\times 5^1\times {\mathrm{349}}^1\times {\mathrm{6221}}^1$

素因数の和:6577

約数の個数: 16

約数和(自身を含む): 39198600

約数和(自身を除く): 17487310

約数列:

[1, 2, 5, 10, 349, 698, 1745, 3490, 6221, 12442, 31105, 62210, 2171129, 4342258, 10855645, 21711290]

約数ペア:

[(1, 21711290), (2, 10855645), (5, 4342258), (10, 2171129), (349, 62210), (698, 31105), (1745, 12442), (3490, 6221)]