21981836

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{337}}^1\times {\mathrm{709}}^1$

素因数の和:1073

約数の個数: 24

約数和(自身を含む): 40316640

約数和(自身を除く): 18334804

約数列:

[1, 2, 4, 23, 46, 92, 337, 674, 709, 1348, 1418, 2836, 7751, 15502, 16307, 31004, 32614, 65228, 238933, 477866, 955732, 5495459, 10990918, 21981836]

約数ペア:

[(1, 21981836), (2, 10990918), (4, 5495459), (23, 955732), (46, 477866), (92, 238933), (337, 65228), (674, 32614), (709, 31004), (1348, 16307), (1418, 15502), (2836, 7751)]