20837509

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{14243}}^1$

素因数の和:14280

約数の個数: 16

約数和(自身を含む): 27348480

約数和(自身を除く): 6510971

約数列:

[1, 7, 11, 19, 77, 133, 209, 1463, 14243, 99701, 156673, 270617, 1096711, 1894319, 2976787, 20837509]

約数ペア:

[(1, 20837509), (7, 2976787), (11, 1894319), (19, 1096711), (77, 270617), (133, 156673), (209, 99701), (1463, 14243)]