20876380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{3637}}^1$

素因数の和:3694

約数の個数: 48

約数和(自身を含む): 51339456

約数和(自身を除く): 30463076

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 82, 140, 164, 205, 287, 410, 574, 820, 1148, 1435, 2870, 3637, 5740, 7274, 14548, 18185, 25459, 36370, 50918, 72740, 101836, 127295, 149117, 254590, 298234, 509180, 596468, 745585, 1043819, 1491170, 2087638, 2982340, 4175276, 5219095, 10438190, 20876380]

約数ペア:

[(1, 20876380), (2, 10438190), (4, 5219095), (5, 4175276), (7, 2982340), (10, 2087638), (14, 1491170), (20, 1043819), (28, 745585), (35, 596468), (41, 509180), (70, 298234), (82, 254590), (140, 149117), (164, 127295), (205, 101836), (287, 72740), (410, 50918), (574, 36370), (820, 25459), (1148, 18185), (1435, 14548), (2870, 7274), (3637, 5740)]