21187836

素因数分解:

$2^2\times 3^2\times {\mathrm{409}}^1\times {\mathrm{1439}}^1$

素因数の和:1858

約数の個数: 36

約数和(自身を含む): 53726400

約数和(自身を除く): 32538564

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 409, 818, 1227, 1439, 1636, 2454, 2878, 3681, 4317, 4908, 5756, 7362, 8634, 12951, 14724, 17268, 25902, 51804, 588551, 1177102, 1765653, 2354204, 3531306, 5296959, 7062612, 10593918, 21187836]

約数ペア:

[(1, 21187836), (2, 10593918), (3, 7062612), (4, 5296959), (6, 3531306), (9, 2354204), (12, 1765653), (18, 1177102), (36, 588551), (409, 51804), (818, 25902), (1227, 17268), (1439, 14724), (1636, 12951), (2454, 8634), (2878, 7362), (3681, 5756), (4317, 4908)]