28103397

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{78721}}^1$

素因数の和:78748

約数の個数: 16

約数和(自身を含む): 45343872

約数和(自身を除く): 17240475

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 78721, 236163, 551047, 1338257, 1653141, 4014771, 9367799, 28103397]

約数ペア:

[(1, 28103397), (3, 9367799), (7, 4014771), (17, 1653141), (21, 1338257), (51, 551047), (119, 236163), (357, 78721)]