213390881

素因数分解:

${\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{919}}^1$

素因数の和:1061

約数の個数: 24

約数和(自身を含む): 249614400

約数和(自身を除く): 36223519

約数列:

[1, 11, 19, 101, 121, 209, 919, 1111, 1919, 2299, 10109, 12221, 17461, 21109, 92819, 111199, 192071, 232199, 1021009, 1763561, 2112781, 11231099, 19399171, 213390881]

約数ペア:

[(1, 213390881), (11, 19399171), (19, 11231099), (101, 2112781), (121, 1763561), (209, 1021009), (919, 232199), (1111, 192071), (1919, 111199), (2299, 92819), (10109, 21109), (12221, 17461)]