21659536

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9739}}^1$

素因数の和:9886

約数の個数: 20

約数和(自身を含む): 42271600

約数和(自身を除く): 20612064

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9739, 19478, 38956, 77912, 155824, 1353721, 2707442, 5414884, 10829768, 21659536]

約数ペア:

[(1, 21659536), (2, 10829768), (4, 5414884), (8, 2707442), (16, 1353721), (139, 155824), (278, 77912), (556, 38956), (1112, 19478), (2224, 9739)]