21427325

素因数分解:

$5^2\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{199}}^1$

素因数の和:341

約数の個数: 24

約数和(自身を含む): 27528000

約数和(自身を除く): 6100675

約数列:

[1, 5, 25, 59, 73, 199, 295, 365, 995, 1475, 1825, 4307, 4975, 11741, 14527, 21535, 58705, 72635, 107675, 293525, 363175, 857093, 4285465, 21427325]

約数ペア:

[(1, 21427325), (5, 4285465), (25, 857093), (59, 363175), (73, 293525), (199, 107675), (295, 72635), (365, 58705), (995, 21535), (1475, 14527), (1825, 11741), (4307, 4975)]