81218543

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{16273}}^1$

素因数の和:16334

約数の個数: 16

約数和(自身を含む): 99987456

約数和(自身を除く): 18768913

約数列:

[1, 7, 23, 31, 161, 217, 713, 4991, 16273, 113911, 374279, 504463, 2619953, 3531241, 11602649, 81218543]

約数ペア:

[(1, 81218543), (7, 11602649), (23, 3531241), (31, 2619953), (161, 504463), (217, 374279), (713, 113911), (4991, 16273)]