28780029

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{8263}}^1$

素因数の和:8318

約数の個数: 20

約数和(自身を含む): 43997536

約数和(自身を除く): 15217507

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 8263, 24789, 74367, 223101, 355309, 669303, 1065927, 3197781, 9593343, 28780029]

約数ペア:

[(1, 28780029), (3, 9593343), (9, 3197781), (27, 1065927), (43, 669303), (81, 355309), (129, 223101), (387, 74367), (1161, 24789), (3483, 8263)]