20909812

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{2341}}^1$

素因数の和:2392

約数の個数: 48

約数和(自身を含む): 47214720

約数和(自身を除く): 26304908

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 29, 44, 58, 77, 116, 154, 203, 308, 319, 406, 638, 812, 1276, 2233, 2341, 4466, 4682, 8932, 9364, 16387, 25751, 32774, 51502, 65548, 67889, 103004, 135778, 180257, 271556, 360514, 475223, 721028, 746779, 950446, 1493558, 1900892, 2987116, 5227453, 10454906, 20909812]

約数ペア:

[(1, 20909812), (2, 10454906), (4, 5227453), (7, 2987116), (11, 1900892), (14, 1493558), (22, 950446), (28, 746779), (29, 721028), (44, 475223), (58, 360514), (77, 271556), (116, 180257), (154, 135778), (203, 103004), (308, 67889), (319, 65548), (406, 51502), (638, 32774), (812, 25751), (1276, 16387), (2233, 9364), (2341, 8932), (4466, 4682)]