19128767

素因数分解:

$7^4\times {\mathrm{31}}^1\times {\mathrm{257}}^1$

素因数の和:316

約数の個数: 20

約数和(自身を含む): 23125056

約数和(自身を除く): 3996289

約数列:

[1, 7, 31, 49, 217, 257, 343, 1519, 1799, 2401, 7967, 10633, 12593, 55769, 74431, 88151, 390383, 617057, 2732681, 19128767]

約数ペア:

[(1, 19128767), (7, 2732681), (31, 617057), (49, 390383), (217, 88151), (257, 74431), (343, 55769), (1519, 12593), (1799, 10633), (2401, 7967)]