19772991

素因数分解:

$3^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{811}}^1$

素因数の和:873

約数の個数: 40

約数和(自身を含む): 34584704

約数和(自身を除く): 14811713

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 81, 129, 189, 301, 387, 567, 811, 903, 1161, 2433, 2709, 3483, 5677, 7299, 8127, 17031, 21897, 24381, 34873, 51093, 65691, 104619, 153279, 244111, 313857, 459837, 732333, 941571, 2196999, 2824713, 6590997, 19772991]

約数ペア:

[(1, 19772991), (3, 6590997), (7, 2824713), (9, 2196999), (21, 941571), (27, 732333), (43, 459837), (63, 313857), (81, 244111), (129, 153279), (189, 104619), (301, 65691), (387, 51093), (567, 34873), (811, 24381), (903, 21897), (1161, 17031), (2433, 8127), (2709, 7299), (3483, 5677)]