21238143

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1\times {\mathrm{911}}^1$

素因数の和:1342

約数の個数: 16

約数和(自身を含む): 29913600

約数和(自身を除く): 8675457

約数列:

[1, 3, 19, 57, 409, 911, 1227, 2733, 7771, 17309, 23313, 51927, 372599, 1117797, 7079381, 21238143]

約数ペア:

[(1, 21238143), (3, 7079381), (19, 1117797), (57, 372599), (409, 51927), (911, 23313), (1227, 17309), (2733, 7771)]