21684844

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{233}}^1\times {\mathrm{439}}^1$

素因数の和:729

約数の個数: 24

約数和(自身を含む): 38918880

約数和(自身を除く): 17234036

約数列:

[1, 2, 4, 53, 106, 212, 233, 439, 466, 878, 932, 1756, 12349, 23267, 24698, 46534, 49396, 93068, 102287, 204574, 409148, 5421211, 10842422, 21684844]

約数ペア:

[(1, 21684844), (2, 10842422), (4, 5421211), (53, 409148), (106, 204574), (212, 102287), (233, 93068), (439, 49396), (466, 46534), (878, 24698), (932, 23267), (1756, 12349)]