21181743

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{23773}}^1$

素因数の和:23796

約数の個数: 20

約数和(自身を含む): 34519848

約数和(自身を除く): 13338105

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 297, 891, 23773, 71319, 213957, 261503, 641871, 784509, 1925613, 2353527, 7060581, 21181743]

約数ペア:

[(1, 21181743), (3, 7060581), (9, 2353527), (11, 1925613), (27, 784509), (33, 641871), (81, 261503), (99, 213957), (297, 71319), (891, 23773)]