21771310

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197921}}^1$

素因数の和:197939

約数の個数: 16

約数和(自身を含む): 42751152

約数和(自身を除く): 20979842

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 197921, 395842, 989605, 1979210, 2177131, 4354262, 10885655, 21771310]

約数ペア:

[(1, 21771310), (2, 10885655), (5, 4354262), (10, 2177131), (11, 1979210), (22, 989605), (55, 395842), (110, 197921)]