19278189

素因数分解:

$3^3\times 7^1\times {\mathrm{102001}}^1$

素因数の和:102017

約数の個数: 16

約数和(自身を含む): 32640640

約数和(自身を除く): 13362451

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 102001, 306003, 714007, 918009, 2142021, 2754027, 6426063, 19278189]

約数ペア:

[(1, 19278189), (3, 6426063), (7, 2754027), (9, 2142021), (21, 918009), (27, 714007), (63, 306003), (189, 102001)]