21540699

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{1223}}^1$

素因数の和:1351

約数の個数: 24

約数和(自身を含む): 33096960

約数和(自身を除く): 11556261

約数列:

[1, 3, 9, 19, 57, 103, 171, 309, 927, 1223, 1957, 3669, 5871, 11007, 17613, 23237, 69711, 125969, 209133, 377907, 1133721, 2393411, 7180233, 21540699]

約数ペア:

[(1, 21540699), (3, 7180233), (9, 2393411), (19, 1133721), (57, 377907), (103, 209133), (171, 125969), (309, 69711), (927, 23237), (1223, 17613), (1957, 11007), (3669, 5871)]