21818260

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47431}}^1$

素因数の和:47463

約数の個数: 24

約数和(自身を含む): 47811456

約数和(自身を除く): 25993196

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 47431, 94862, 189724, 237155, 474310, 948620, 1090913, 2181826, 4363652, 5454565, 10909130, 21818260]

約数ペア:

[(1, 21818260), (2, 10909130), (4, 5454565), (5, 4363652), (10, 2181826), (20, 1090913), (23, 948620), (46, 474310), (92, 237155), (115, 189724), (230, 94862), (460, 47431)]