20297788

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{17681}}^1$

素因数の和:17733

約数の個数: 24

約数和(自身を含む): 41588064

約数和(自身を除く): 21290276

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 1148, 17681, 35362, 70724, 123767, 247534, 495068, 724921, 1449842, 2899684, 5074447, 10148894, 20297788]

約数ペア:

[(1, 20297788), (2, 10148894), (4, 5074447), (7, 2899684), (14, 1449842), (28, 724921), (41, 495068), (82, 247534), (164, 123767), (287, 70724), (574, 35362), (1148, 17681)]