20402863

素因数分解:

${\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1$

素因数の和:259

約数の個数: 24

約数和(自身を含む): 23980320

約数和(自身を除く): 3577457

約数列:

[1, 13, 23, 29, 169, 181, 299, 377, 667, 2353, 3887, 4163, 4901, 5249, 8671, 30589, 54119, 68237, 112723, 120727, 703547, 887081, 1569451, 20402863]

約数ペア:

[(1, 20402863), (13, 1569451), (23, 887081), (29, 703547), (169, 120727), (181, 112723), (299, 68237), (377, 54119), (667, 30589), (2353, 8671), (3887, 5249), (4163, 4901)]