28118765

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{757}}^1$

素因数の和:821

約数の個数: 32

約数和(自身を含む): 39294720

約数和(自身を除く): 11175955

約数列:

[1, 5, 17, 19, 23, 85, 95, 115, 323, 391, 437, 757, 1615, 1955, 2185, 3785, 7429, 12869, 14383, 17411, 37145, 64345, 71915, 87055, 244511, 295987, 330809, 1222555, 1479935, 1654045, 5623753, 28118765]

約数ペア:

[(1, 28118765), (5, 5623753), (17, 1654045), (19, 1479935), (23, 1222555), (85, 330809), (95, 295987), (115, 244511), (323, 87055), (391, 71915), (437, 64345), (757, 37145), (1615, 17411), (1955, 14383), (2185, 12869), (3785, 7429)]