19409648

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{71359}}^1$

素因数の和:71384

約数の個数: 20

約数和(自身を含む): 39818880

約数和(自身を除く): 20409232

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 71359, 142718, 285436, 570872, 1141744, 1213103, 2426206, 4852412, 9704824, 19409648]

約数ペア:

[(1, 19409648), (2, 9704824), (4, 4852412), (8, 2426206), (16, 1213103), (17, 1141744), (34, 570872), (68, 285436), (136, 142718), (272, 71359)]