217660225

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{300221}}^1$

素因数の和:300260

約数の個数: 12

約数和(自身を含む): 279206460

約数和(自身を除く): 61546235

約数列:

[1, 5, 25, 29, 145, 725, 300221, 1501105, 7505525, 8706409, 43532045, 217660225]

約数ペア:

[(1, 217660225), (5, 43532045), (25, 8706409), (29, 7505525), (145, 1501105), (725, 300221)]