7888881

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:142

約数の個数: 64

約数和(自身を含む): 14708736

約数和(自身を除く): 6819855

約数列:

[1, 3, 7, 11, 13, 21, 33, 37, 39, 71, 77, 91, 111, 143, 213, 231, 259, 273, 407, 429, 481, 497, 777, 781, 923, 1001, 1221, 1443, 1491, 2343, 2627, 2769, 2849, 3003, 3367, 5291, 5467, 6461, 7881, 8547, 10101, 10153, 15873, 16401, 18389, 19383, 28897, 30459, 34151, 37037, 55167, 71071, 86691, 102453, 111111, 202279, 213213, 239057, 375661, 606837, 717171, 1126983, 2629627, 7888881]

約数ペア:

[(1, 7888881), (3, 2629627), (7, 1126983), (11, 717171), (13, 606837), (21, 375661), (33, 239057), (37, 213213), (39, 202279), (71, 111111), (77, 102453), (91, 86691), (111, 71071), (143, 55167), (213, 37037), (231, 34151), (259, 30459), (273, 28897), (407, 19383), (429, 18389), (481, 16401), (497, 15873), (777, 10153), (781, 10101), (923, 8547), (1001, 7881), (1221, 6461), (1443, 5467), (1491, 5291), (2343, 3367), (2627, 3003), (2769, 2849)]