209215775

素因数分解:

$5^2\times {\mathrm{1811}}^1\times {\mathrm{4621}}^1$

素因数の和:6442

約数の個数: 12

約数和(自身を含む): 259626984

約数和(自身を除く): 50411209

約数列:

[1, 5, 25, 1811, 4621, 9055, 23105, 45275, 115525, 8368631, 41843155, 209215775]

約数ペア:

[(1, 209215775), (5, 41843155), (25, 8368631), (1811, 115525), (4621, 45275), (9055, 23105)]