21082113

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{20021}}^1$

素因数の和:20046

約数の個数: 20

約数和(自身を含む): 33917268

約数和(自身を除く): 12835155

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 20021, 60063, 180189, 260273, 540567, 780819, 1621701, 2342457, 7027371, 21082113]

約数ペア:

[(1, 21082113), (3, 7027371), (9, 2342457), (13, 1621701), (27, 780819), (39, 540567), (81, 260273), (117, 180189), (351, 60063), (1053, 20021)]