21428792

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{809}}^1$

素因数の和:876

約数の個数: 64

約数和(自身を含む): 51321600

約数和(自身を除く): 29892808

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 43, 44, 56, 77, 86, 88, 154, 172, 301, 308, 344, 473, 602, 616, 809, 946, 1204, 1618, 1892, 2408, 3236, 3311, 3784, 5663, 6472, 6622, 8899, 11326, 13244, 17798, 22652, 26488, 34787, 35596, 45304, 62293, 69574, 71192, 124586, 139148, 243509, 249172, 278296, 382657, 487018, 498344, 765314, 974036, 1530628, 1948072, 2678599, 3061256, 5357198, 10714396, 21428792]

約数ペア:

[(1, 21428792), (2, 10714396), (4, 5357198), (7, 3061256), (8, 2678599), (11, 1948072), (14, 1530628), (22, 974036), (28, 765314), (43, 498344), (44, 487018), (56, 382657), (77, 278296), (86, 249172), (88, 243509), (154, 139148), (172, 124586), (301, 71192), (308, 69574), (344, 62293), (473, 45304), (602, 35596), (616, 34787), (809, 26488), (946, 22652), (1204, 17798), (1618, 13244), (1892, 11326), (2408, 8899), (3236, 6622), (3311, 6472), (3784, 5663)]