21011868

素因数分解:

$2^2\times 3^2\times {\mathrm{661}}^1\times {\mathrm{883}}^1$

素因数の和:1554

約数の個数: 36

約数和(自身を含む): 53253928

約数和(自身を除く): 32242060

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 661, 883, 1322, 1766, 1983, 2644, 2649, 3532, 3966, 5298, 5949, 7932, 7947, 10596, 11898, 15894, 23796, 31788, 583663, 1167326, 1750989, 2334652, 3501978, 5252967, 7003956, 10505934, 21011868]

約数ペア:

[(1, 21011868), (2, 10505934), (3, 7003956), (4, 5252967), (6, 3501978), (9, 2334652), (12, 1750989), (18, 1167326), (36, 583663), (661, 31788), (883, 23796), (1322, 15894), (1766, 11898), (1983, 10596), (2644, 7947), (2649, 7932), (3532, 5949), (3966, 5298)]