21547988

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1627}}^1$

素因数の和:1692

約数の個数: 48

約数和(自身を含む): 48136704

約数和(自身を除く): 26588716

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 43, 44, 77, 86, 154, 172, 301, 308, 473, 602, 946, 1204, 1627, 1892, 3254, 3311, 6508, 6622, 11389, 13244, 17897, 22778, 35794, 45556, 69961, 71588, 125279, 139922, 250558, 279844, 489727, 501116, 769571, 979454, 1539142, 1958908, 3078284, 5386997, 10773994, 21547988]

約数ペア:

[(1, 21547988), (2, 10773994), (4, 5386997), (7, 3078284), (11, 1958908), (14, 1539142), (22, 979454), (28, 769571), (43, 501116), (44, 489727), (77, 279844), (86, 250558), (154, 139922), (172, 125279), (301, 71588), (308, 69961), (473, 45556), (602, 35794), (946, 22778), (1204, 17897), (1627, 13244), (1892, 11389), (3254, 6622), (3311, 6508)]