21976569

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{823}}^1$

素因数の和:898

約数の個数: 32

約数和(自身を含む): 34805760

約数和(自身を除く): 12829191

約数列:

[1, 3, 9, 23, 27, 43, 69, 129, 207, 387, 621, 823, 989, 1161, 2469, 2967, 7407, 8901, 18929, 22221, 26703, 35389, 56787, 106167, 170361, 318501, 511083, 813947, 955503, 2441841, 7325523, 21976569]

約数ペア:

[(1, 21976569), (3, 7325523), (9, 2441841), (23, 955503), (27, 813947), (43, 511083), (69, 318501), (129, 170361), (207, 106167), (387, 56787), (621, 35389), (823, 26703), (989, 22221), (1161, 18929), (2469, 8901), (2967, 7407)]