78021668

素因数分解:

$2^2\times {\mathrm{31}}^2\times {\mathrm{20297}}^1$

素因数の和:20363

約数の個数: 18

約数和(自身を含む): 141091398

約数和(自身を除く): 63069730

約数列:

[1, 2, 4, 31, 62, 124, 961, 1922, 3844, 20297, 40594, 81188, 629207, 1258414, 2516828, 19505417, 39010834, 78021668]

約数ペア:

[(1, 78021668), (2, 39010834), (4, 19505417), (31, 2516828), (62, 1258414), (124, 629207), (961, 81188), (1922, 40594), (3844, 20297)]