28112889

素因数分解:

$3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{9631}}^1$

素因数の和:9780

約数の個数: 16

約数和(自身を含む): 43151360

約数和(自身を除く): 15038471

約数列:

[1, 3, 7, 21, 139, 417, 973, 2919, 9631, 28893, 67417, 202251, 1338709, 4016127, 9370963, 28112889]

約数ペア:

[(1, 28112889), (3, 9370963), (7, 4016127), (21, 1338709), (139, 202251), (417, 67417), (973, 28893), (2919, 9631)]