21000837788

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{39475259}}^1$

素因数の和:39475289

約数の個数: 24

約数和(自身を含む): 44212291200

約数和(自身を除く): 23211453412

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 39475259, 78950518, 157901036, 276326813, 552653626, 750029921, 1105307252, 1500059842, 3000119684, 5250209447, 10500418894, 21000837788]

約数ペア:

[(1, 21000837788), (2, 10500418894), (4, 5250209447), (7, 3000119684), (14, 1500059842), (19, 1105307252), (28, 750029921), (38, 552653626), (76, 276326813), (133, 157901036), (266, 78950518), (532, 39475259)]