20181224

素因数分解:

$2^3\times 7^1\times {\mathrm{557}}^1\times {\mathrm{647}}^1$

素因数の和:1217

約数の個数: 32

約数和(自身を含む): 43390080

約数和(自身を除く): 23208856

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 557, 647, 1114, 1294, 2228, 2588, 3899, 4456, 4529, 5176, 7798, 9058, 15596, 18116, 31192, 36232, 360379, 720758, 1441516, 2522653, 2883032, 5045306, 10090612, 20181224]

約数ペア:

[(1, 20181224), (2, 10090612), (4, 5045306), (7, 2883032), (8, 2522653), (14, 1441516), (28, 720758), (56, 360379), (557, 36232), (647, 31192), (1114, 18116), (1294, 15596), (2228, 9058), (2588, 7798), (3899, 5176), (4456, 4529)]