20720194

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{40949}}^1$

素因数の和:40985

約数の個数: 16

約数和(自身を含む): 35380800

約数和(自身を除く): 14660606

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 40949, 81898, 450439, 900878, 941827, 1883654, 10360097, 20720194]

約数ペア:

[(1, 20720194), (2, 10360097), (11, 1883654), (22, 941827), (23, 900878), (46, 450439), (253, 81898), (506, 40949)]