21435681

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{641}}^1$

素因数の和:872

約数の個数: 16

約数和(自身を含む): 29213568

約数和(自身を除く): 7777887

約数列:

[1, 3, 71, 157, 213, 471, 641, 1923, 11147, 33441, 45511, 100637, 136533, 301911, 7145227, 21435681]

約数ペア:

[(1, 21435681), (3, 7145227), (71, 301911), (157, 136533), (213, 100637), (471, 45511), (641, 33441), (1923, 11147)]