81309866

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1\times {\mathrm{317}}^1$

素因数の和:550

約数の個数: 32

約数和(自身を含む): 136002240

約数和(自身を除く): 54692374

約数列:

[1, 2, 11, 22, 89, 131, 178, 262, 317, 634, 979, 1441, 1958, 2882, 3487, 6974, 11659, 23318, 28213, 41527, 56426, 83054, 128249, 256498, 310343, 456797, 620686, 913594, 3695903, 7391806, 40654933, 81309866]

約数ペア:

[(1, 81309866), (2, 40654933), (11, 7391806), (22, 3695903), (89, 913594), (131, 620686), (178, 456797), (262, 310343), (317, 256498), (634, 128249), (979, 83054), (1441, 56426), (1958, 41527), (2882, 28213), (3487, 23318), (6974, 11659)]