21278444

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{281}}^1\times {\mathrm{1721}}^1$

素因数の和:2017

約数の個数: 24

約数和(自身を含む): 40790736

約数和(自身を除く): 19512292

約数列:

[1, 2, 4, 11, 22, 44, 281, 562, 1124, 1721, 3091, 3442, 6182, 6884, 12364, 18931, 37862, 75724, 483601, 967202, 1934404, 5319611, 10639222, 21278444]

約数ペア:

[(1, 21278444), (2, 10639222), (4, 5319611), (11, 1934404), (22, 967202), (44, 483601), (281, 75724), (562, 37862), (1124, 18931), (1721, 12364), (3091, 6884), (3442, 6182)]