81518437

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:170

約数の個数: 64

約数和(自身を含む): 117669888

約数和(自身を除く): 36151451

約数列:

[1, 7, 11, 13, 31, 37, 71, 77, 91, 143, 217, 259, 341, 403, 407, 481, 497, 781, 923, 1001, 1147, 2201, 2387, 2627, 2821, 2849, 3367, 4433, 5291, 5467, 6461, 8029, 10153, 12617, 14911, 15407, 18389, 24211, 28613, 28897, 31031, 34151, 37037, 71071, 81437, 88319, 104377, 164021, 169477, 200291, 202279, 239057, 314743, 375661, 570059, 895807, 1058681, 1148147, 2203201, 2629627, 6270649, 7410767, 11645491, 81518437]

約数ペア:

[(1, 81518437), (7, 11645491), (11, 7410767), (13, 6270649), (31, 2629627), (37, 2203201), (71, 1148147), (77, 1058681), (91, 895807), (143, 570059), (217, 375661), (259, 314743), (341, 239057), (403, 202279), (407, 200291), (481, 169477), (497, 164021), (781, 104377), (923, 88319), (1001, 81437), (1147, 71071), (2201, 37037), (2387, 34151), (2627, 31031), (2821, 28897), (2849, 28613), (3367, 24211), (4433, 18389), (5291, 15407), (5467, 14911), (6461, 12617), (8029, 10153)]