21155824

素因数分解:

$2^4\times {\mathrm{173}}^1\times {\mathrm{7643}}^1$

素因数の和:7824

約数の個数: 20

約数和(自身を含む): 41231736

約数和(自身を除く): 20075912

約数列:

[1, 2, 4, 8, 16, 173, 346, 692, 1384, 2768, 7643, 15286, 30572, 61144, 122288, 1322239, 2644478, 5288956, 10577912, 21155824]

約数ペア:

[(1, 21155824), (2, 10577912), (4, 5288956), (8, 2644478), (16, 1322239), (173, 122288), (346, 61144), (692, 30572), (1384, 15286), (2768, 7643)]