20607664

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{389}}^1$

素因数の和:458

約数の個数: 80

約数和(自身を含む): 51068160

約数和(自身を除く): 30460496

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 43, 44, 56, 77, 86, 88, 112, 154, 172, 176, 301, 308, 344, 389, 473, 602, 616, 688, 778, 946, 1204, 1232, 1556, 1892, 2408, 2723, 3112, 3311, 3784, 4279, 4816, 5446, 6224, 6622, 7568, 8558, 10892, 13244, 16727, 17116, 21784, 26488, 29953, 33454, 34232, 43568, 52976, 59906, 66908, 68464, 117089, 119812, 133816, 183997, 234178, 239624, 267632, 367994, 468356, 479248, 735988, 936712, 1287979, 1471976, 1873424, 2575958, 2943952, 5151916, 10303832, 20607664]

約数ペア:

[(1, 20607664), (2, 10303832), (4, 5151916), (7, 2943952), (8, 2575958), (11, 1873424), (14, 1471976), (16, 1287979), (22, 936712), (28, 735988), (43, 479248), (44, 468356), (56, 367994), (77, 267632), (86, 239624), (88, 234178), (112, 183997), (154, 133816), (172, 119812), (176, 117089), (301, 68464), (308, 66908), (344, 59906), (389, 52976), (473, 43568), (602, 34232), (616, 33454), (688, 29953), (778, 26488), (946, 21784), (1204, 17116), (1232, 16727), (1556, 13244), (1892, 10892), (2408, 8558), (2723, 7568), (3112, 6622), (3311, 6224), (3784, 5446), (4279, 4816)]