21855955

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{2297}}^1$

素因数の和:2486

約数の個数: 16

約数和(自身を含む): 28789344

約数和(自身を除く): 6933389

約数列:

[1, 5, 11, 55, 173, 865, 1903, 2297, 9515, 11485, 25267, 126335, 397381, 1986905, 4371191, 21855955]

約数ペア:

[(1, 21855955), (5, 4371191), (11, 1986905), (55, 397381), (173, 126335), (865, 25267), (1903, 11485), (2297, 9515)]