18904781

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{4049}}^1$

素因数の和:4108

約数の個数: 16

約数和(自身を含む): 23328000

約数和(自身を除く): 4423219

約数列:

[1, 7, 23, 29, 161, 203, 667, 4049, 4669, 28343, 93127, 117421, 651889, 821947, 2700683, 18904781]

約数ペア:

[(1, 18904781), (7, 2700683), (23, 821947), (29, 651889), (161, 117421), (203, 93127), (667, 28343), (4049, 4669)]