19988551

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{1621}}^1$

素因数の和:1710

約数の個数: 16

約数和(自身を含む): 23356800

約数和(自身を除く): 3368249

約数列:

[1, 11, 19, 59, 209, 649, 1121, 1621, 12331, 17831, 30799, 95639, 338789, 1052029, 1817141, 19988551]

約数ペア:

[(1, 19988551), (11, 1817141), (19, 1052029), (59, 338789), (209, 95639), (649, 30799), (1121, 17831), (1621, 12331)]