21007660

素因数分解:

$2^2\times 5^1\times {\mathrm{911}}^1\times {\mathrm{1153}}^1$

素因数の和:2073

約数の個数: 24

約数和(自身を含む): 44202816

約数和(自身を除く): 23195156

約数列:

[1, 2, 4, 5, 10, 20, 911, 1153, 1822, 2306, 3644, 4555, 4612, 5765, 9110, 11530, 18220, 23060, 1050383, 2100766, 4201532, 5251915, 10503830, 21007660]

約数ペア:

[(1, 21007660), (2, 10503830), (4, 5251915), (5, 4201532), (10, 2100766), (20, 1050383), (911, 23060), (1153, 18220), (1822, 11530), (2306, 9110), (3644, 5765), (4555, 4612)]