20893521

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{709}}^1$

素因数の和:789

約数の個数: 32

約数和(自身を含む): 32716800

約数和(自身を除く): 11823279

約数列:

[1, 3, 11, 19, 33, 47, 57, 141, 209, 517, 627, 709, 893, 1551, 2127, 2679, 7799, 9823, 13471, 23397, 29469, 33323, 40413, 99969, 148181, 366553, 444543, 633137, 1099659, 1899411, 6964507, 20893521]

約数ペア:

[(1, 20893521), (3, 6964507), (11, 1899411), (19, 1099659), (33, 633137), (47, 444543), (57, 366553), (141, 148181), (209, 99969), (517, 40413), (627, 33323), (709, 29469), (893, 23397), (1551, 13471), (2127, 9823), (2679, 7799)]