19895391

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{223}}^1\times {\mathrm{431}}^1$

素因数の和:683

約数の個数: 24

約数和(自身を含む): 30191616

約数和(自身を除く): 10296225

約数列:

[1, 3, 9, 23, 69, 207, 223, 431, 669, 1293, 2007, 3879, 5129, 9913, 15387, 29739, 46161, 89217, 96113, 288339, 865017, 2210599, 6631797, 19895391]

約数ペア:

[(1, 19895391), (3, 6631797), (9, 2210599), (23, 865017), (69, 288339), (207, 96113), (223, 89217), (431, 46161), (669, 29739), (1293, 15387), (2007, 9913), (3879, 5129)]