20380820

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{9349}}^1$

素因数の和:9467

約数の個数: 24

約数和(自身を含む): 43197000

約数和(自身を除く): 22816180

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 9349, 18698, 37396, 46745, 93490, 186980, 1019041, 2038082, 4076164, 5095205, 10190410, 20380820]

約数ペア:

[(1, 20380820), (2, 10190410), (4, 5095205), (5, 4076164), (10, 2038082), (20, 1019041), (109, 186980), (218, 93490), (436, 46745), (545, 37396), (1090, 18698), (2180, 9349)]