11988221

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{3919}}^1$

素因数の和:3968

約数の個数: 16

約数和(自身を含む): 15052800

約数和(自身を除く): 3064579

約数列:

[1, 7, 19, 23, 133, 161, 437, 3059, 3919, 27433, 74461, 90137, 521227, 630959, 1712603, 11988221]

約数ペア:

[(1, 11988221), (7, 1712603), (19, 630959), (23, 521227), (133, 90137), (161, 74461), (437, 27433), (3059, 3919)]