21169786

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{13553}}^1$

素因数の和:13637

約数の個数: 16

約数和(自身を含む): 35131968

約数和(自身を除く): 13962182

約数列:

[1, 2, 11, 22, 71, 142, 781, 1562, 13553, 27106, 149083, 298166, 962263, 1924526, 10584893, 21169786]

約数ペア:

[(1, 21169786), (2, 10584893), (11, 1924526), (22, 962263), (71, 298166), (142, 149083), (781, 27106), (1562, 13553)]