28243475

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^2\times {\mathrm{47}}^1$

素因数の和:156

約数の個数: 36

約数和(自身を含む): 39434976

約数和(自身を除く): 11191501

約数列:

[1, 5, 13, 25, 43, 47, 65, 215, 235, 325, 559, 611, 1075, 1175, 1849, 2021, 2795, 3055, 9245, 10105, 13975, 15275, 24037, 26273, 46225, 50525, 86903, 120185, 131365, 434515, 600925, 656825, 1129739, 2172575, 5648695, 28243475]

約数ペア:

[(1, 28243475), (5, 5648695), (13, 2172575), (25, 1129739), (43, 656825), (47, 600925), (65, 434515), (215, 131365), (235, 120185), (325, 86903), (559, 50525), (611, 46225), (1075, 26273), (1175, 24037), (1849, 15275), (2021, 13975), (2795, 10105), (3055, 9245)]