19702287

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2803}}^1$

素因数の和:2891

約数の個数: 24

約数和(自身を含む): 31494528

約数和(自身を除く): 11792241

約数列:

[1, 3, 9, 11, 33, 71, 99, 213, 639, 781, 2343, 2803, 7029, 8409, 25227, 30833, 92499, 199013, 277497, 597039, 1791117, 2189143, 6567429, 19702287]

約数ペア:

[(1, 19702287), (3, 6567429), (9, 2189143), (11, 1791117), (33, 597039), (71, 277497), (99, 199013), (213, 92499), (639, 30833), (781, 25227), (2343, 8409), (2803, 7029)]