19994828

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{16607}}^1$

素因数の和:16661

約数の個数: 24

約数和(自身を含む): 40922112

約数和(自身を除く): 20927284

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204, 16607, 33214, 66428, 116249, 232498, 464996, 714101, 1428202, 2856404, 4998707, 9997414, 19994828]

約数ペア:

[(1, 19994828), (2, 9997414), (4, 4998707), (7, 2856404), (14, 1428202), (28, 714101), (43, 464996), (86, 232498), (172, 116249), (301, 66428), (602, 33214), (1204, 16607)]