399040025

素因数分解:

$5^2\times {\mathrm{103}}^1\times {\mathrm{353}}^1\times {\mathrm{439}}^1$

素因数の和:905

約数の個数: 24

約数和(自身を含む): 502170240

約数和(自身を除く): 103130215

約数列:

[1, 5, 25, 103, 353, 439, 515, 1765, 2195, 2575, 8825, 10975, 36359, 45217, 154967, 181795, 226085, 774835, 908975, 1130425, 3874175, 15961601, 79808005, 399040025]

約数ペア:

[(1, 399040025), (5, 79808005), (25, 15961601), (103, 3874175), (353, 1130425), (439, 908975), (515, 774835), (1765, 226085), (2195, 181795), (2575, 154967), (8825, 45217), (10975, 36359)]