1287819

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{1223}}^1$

素因数の和:1248

約数の個数: 20

約数和(自身を含む): 2073456

約数和(自身を除く): 785637

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 1223, 3669, 11007, 15899, 33021, 47697, 99063, 143091, 429273, 1287819]

約数ペア:

[(1, 1287819), (3, 429273), (9, 143091), (13, 99063), (27, 47697), (39, 33021), (81, 15899), (117, 11007), (351, 3669), (1053, 1223)]