21193731

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{6709}}^1$

素因数の和:6737

約数の個数: 24

約数和(自身を含む): 34194160

約数和(自身を除く): 13000429

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 243, 351, 1053, 3159, 6709, 20127, 60381, 87217, 181143, 261651, 543429, 784953, 1630287, 2354859, 7064577, 21193731]

約数ペア:

[(1, 21193731), (3, 7064577), (9, 2354859), (13, 1630287), (27, 784953), (39, 543429), (81, 261651), (117, 181143), (243, 87217), (351, 60381), (1053, 20127), (3159, 6709)]